{"id":328036,"date":"2025-08-01T06:12:59","date_gmt":"2025-08-01T06:12:59","guid":{"rendered":"https:\/\/pocketoption.com\/blog\/news-events\/data\/z-test-formula-2\/"},"modified":"2025-08-01T06:12:59","modified_gmt":"2025-08-01T06:12:59","slug":"z-test-formula","status":"publish","type":"post","link":"https:\/\/pocketoption.com\/blog\/vt\/knowledge-base\/learning\/z-test-formula\/","title":{"rendered":"C\u00f4ng th\u1ee9c Ki\u1ec3m \u0111\u1ecbnh Z trong Ph\u00e2n t\u00edch T\u00e0i ch\u00ednh"},"content":{"rendered":"<div id=\"root\"><div id=\"wrap-img-root\"><\/div><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":5,"featured_media":327205,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[17],"tags":[37,28,44],"class_list":["post-328036","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-learning","tag-indicator","tag-investment","tag-strategy"],"acf":{"h1":"L\u00e0m ch\u1ee7 C\u00f4ng th\u1ee9c Ki\u1ec3m \u0111\u1ecbnh Z cho Quy\u1ebft \u0111\u1ecbnh T\u00e0i ch\u00ednh","h1_source":{"label":"H1","type":"text","formatted_value":"L\u00e0m ch\u1ee7 C\u00f4ng th\u1ee9c Ki\u1ec3m \u0111\u1ecbnh Z cho Quy\u1ebft \u0111\u1ecbnh T\u00e0i ch\u00ednh"},"description":"C\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu trong ph\u00e2n t\u00edch t\u00e0i ch\u00ednh, gi\u00fap so s\u00e1nh gi\u1eefa d\u1eef li\u1ec7u m\u1eabu v\u00e0 d\u1eef li\u1ec7u t\u1ed5ng th\u1ec3, v\u00e0 \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong ki\u1ec3m \u0111\u1ecbnh gi\u1ea3 thuy\u1ebft v\u00e0 ra quy\u1ebft \u0111\u1ecbnh.","description_source":{"label":"Description","type":"textarea","formatted_value":"C\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu trong ph\u00e2n t\u00edch t\u00e0i ch\u00ednh, gi\u00fap so s\u00e1nh gi\u1eefa d\u1eef li\u1ec7u m\u1eabu v\u00e0 d\u1eef li\u1ec7u t\u1ed5ng th\u1ec3, v\u00e0 \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong ki\u1ec3m \u0111\u1ecbnh gi\u1ea3 thuy\u1ebft v\u00e0 ra quy\u1ebft \u0111\u1ecbnh."},"intro":"L\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 n\u1ec1n t\u1ea3ng trong ph\u00e2n t\u00edch t\u00e0i ch\u00ednh, c\u00f4ng c\u1ee5 n\u00e0y trao quy\u1ec1n cho c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 v\u00e0 nh\u00e0 ph\u00e2n t\u00edch \u0111\u01b0a ra c\u00e1c quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t b\u1eb1ng c\u00e1ch so s\u00e1nh d\u1eef li\u1ec7u m\u1eabu v\u1edbi d\u1eef li\u1ec7u t\u1ed5ng th\u1ec3. Cu\u1ed9c th\u1ea3o lu\u1eadn n\u00e0y s\u1ebd kh\u00e1m ph\u00e1 \u00fd ngh\u0129a c\u1ee7a ki\u1ec3m \u0111\u1ecbnh z, c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 s\u1eed d\u1ee5ng n\u00f3 v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng c\u1ee7a n\u00f3, cung c\u1ea5p nh\u1eefng hi\u1ec3u bi\u1ebft th\u1ef1c t\u1ebf v\u00e0 so s\u00e1nh \u0111\u1ec3 l\u00e0m s\u00e2u s\u1eafc th\u00eam s\u1ef1 hi\u1ec3u bi\u1ebft c\u1ee7a b\u1ea1n v\u1ec1 c\u00f4ng c\u1ee5 th\u1ed1ng k\u00ea quan tr\u1ecdng n\u00e0y.","intro_source":{"label":"Intro","type":"text","formatted_value":"L\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 n\u1ec1n t\u1ea3ng trong ph\u00e2n t\u00edch t\u00e0i ch\u00ednh, c\u00f4ng c\u1ee5 n\u00e0y trao quy\u1ec1n cho c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 v\u00e0 nh\u00e0 ph\u00e2n t\u00edch \u0111\u01b0a ra c\u00e1c quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t b\u1eb1ng c\u00e1ch so s\u00e1nh d\u1eef li\u1ec7u m\u1eabu v\u1edbi d\u1eef li\u1ec7u t\u1ed5ng th\u1ec3. Cu\u1ed9c th\u1ea3o lu\u1eadn n\u00e0y s\u1ebd kh\u00e1m ph\u00e1 \u00fd ngh\u0129a c\u1ee7a ki\u1ec3m \u0111\u1ecbnh z, c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 s\u1eed d\u1ee5ng n\u00f3 v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng c\u1ee7a n\u00f3, cung c\u1ea5p nh\u1eefng hi\u1ec3u bi\u1ebft th\u1ef1c t\u1ebf v\u00e0 so s\u00e1nh \u0111\u1ec3 l\u00e0m s\u00e2u s\u1eafc th\u00eam s\u1ef1 hi\u1ec3u bi\u1ebft c\u1ee7a b\u1ea1n v\u1ec1 c\u00f4ng c\u1ee5 th\u1ed1ng k\u00ea quan tr\u1ecdng n\u00e0y."},"body_html":"<div class=\"custom-html-container\">\n<h2>Hi\u1ec3u V\u1ec1 C\u00f4ng Th\u1ee9c Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\nKi\u1ec3m \u0111\u1ecbnh z l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea m\u1ea1nh m\u1ebd \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 gi\u1eefa trung b\u00ecnh c\u1ee7a m\u1ed9t m\u1eabu v\u00e0 m\u1ed9t qu\u1ea7n th\u1ec3. N\u00f3 \u0111\u1eb7c bi\u1ec7t c\u00f3 l\u1ee3i khi \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ebft v\u00e0 k\u00edch th\u01b0\u1edbc m\u1eabu l\u1edbn (th\u01b0\u1eddng l\u00e0 n &gt; 30). Trong c\u00e1c t\u00ecnh hu\u1ed1ng t\u00e0i ch\u00ednh, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra gi\u1ea3 thuy\u1ebft v\u1ec1 xu h\u01b0\u1edbng th\u1ecb tr\u01b0\u1eddng, \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t c\u1ed5 phi\u1ebfu v\u00e0 x\u00e1c nh\u1eadn d\u1ef1 b\u00e1o kinh t\u1ebf.\n<table>\n<tbody>\n<tr>\n<th>Y\u1ebfu T\u1ed1<\/th>\n<th>M\u00f4 T\u1ea3<\/th>\n<\/tr>\n<tr>\n<td>C\u00f4ng Th\u1ee9c Ki\u1ec3m \u0110\u1ecbnh Z<\/td>\n<td>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 so s\u00e1nh d\u1eef li\u1ec7u m\u1eabu v\u1edbi d\u1eef li\u1ec7u qu\u1ea7n th\u1ec3<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch Th\u01b0\u1edbc M\u1eabu<\/td>\n<td>Th\u01b0\u1eddng l\u1edbn h\u01a1n 30<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 L\u1ec7ch Chu\u1ea9n Qu\u1ea7n Th\u1ec3<\/td>\n<td>Ph\u1ea3i \u0111\u01b0\u1ee3c bi\u1ebft<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u00dd Ngh\u0129a v\u00e0 \u1ee8ng D\u1ee5ng c\u1ee7a Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\nTrong l\u0129nh v\u1ef1c ph\u00e2n t\u00edch t\u00e0i ch\u00ednh, kh\u00e1i ni\u1ec7m n\u00e0y g\u1eafn li\u1ec1n v\u1edbi ki\u1ec3m tra gi\u1ea3 thuy\u1ebft. B\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng n\u00f3, c\u00e1c nh\u00e0 ph\u00e2n t\u00edch c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh li\u1ec7u m\u1ed9t gi\u1ea3 thuy\u1ebft c\u1ee5 th\u1ec3 li\u00ean quan \u0111\u1ebfn m\u1ed9t bi\u1ebfn s\u1ed1 th\u1ecb tr\u01b0\u1eddng ho\u1eb7c kinh t\u1ebf c\u00f3 \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u ch\u1ee9ng minh hay kh\u00f4ng. V\u00ed d\u1ee5, m\u1ed9t nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng ki\u1ec3m \u0111\u1ecbnh n\u00e0y \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 li\u1ec7u m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c giao d\u1ecbch m\u1edbi c\u00f3 mang l\u1ea1i l\u1ee3i nhu\u1eadn cao h\u01a1n m\u1ee9c trung b\u00ecnh c\u1ee7a th\u1ecb tr\u01b0\u1eddng hay kh\u00f4ng.\n<h2>\u0110i\u1ec1u Ki\u1ec7n Cho Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\nM\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a ki\u1ec3m \u0111\u1ecbnh:\n<ul>\n \t<li>D\u1eef li\u1ec7u m\u1eabu n\u00ean \u0111\u01b0\u1ee3c ch\u1ecdn ng\u1eabu nhi\u00ean.<\/li>\n \t<li>K\u00edch th\u01b0\u1edbc m\u1eabu n\u00ean \u0111\u1ee7 l\u1edbn (n &gt; 30).<\/li>\n \t<li>\u0110\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 ph\u1ea3i \u0111\u01b0\u1ee3c bi\u1ebft.<\/li>\n \t<li>D\u1eef li\u1ec7u n\u00ean x\u1ea5p x\u1ec9 ph\u00e2n ph\u1ed1i chu\u1ea9n.<\/li>\n<\/ul>\n\u0110\u00e1p \u1ee9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng k\u1ebft qu\u1ea3 \u0111\u00e1ng tin c\u1eady v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi b\u1ed1i c\u1ea3nh t\u00e0i ch\u00ednh \u0111ang \u0111\u01b0\u1ee3c xem x\u00e9t.\n<h2>Ki\u1ec3m \u0110\u1ecbnh Z \u0110\u01b0\u1ee3c S\u1eed D\u1ee5ng \u0110\u1ec3 L\u00e0m G\u00ec?<\/h2>\nPh\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng t\u00e0i ch\u00ednh, ch\u1eb3ng h\u1ea1n nh\u01b0:\n<ul>\n \t<li>So s\u00e1nh l\u1ee3i nhu\u1eadn c\u1ed5 phi\u1ebfu v\u1edbi m\u1ee9c trung b\u00ecnh c\u1ee7a th\u1ecb tr\u01b0\u1eddng<\/li>\n \t<li>\u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 c\u1ee7a chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ea7u t\u01b0<\/li>\n \t<li>Ki\u1ec3m tra c\u00e1c l\u00fd thuy\u1ebft kinh t\u1ebf<\/li>\n \t<li>Ph\u00e2n t\u00edch c\u00e1c y\u1ebfu t\u1ed1 r\u1ee7i ro trong danh m\u1ee5c \u0111\u1ea7u t\u01b0 t\u00e0i ch\u00ednh<\/li>\n<\/ul>\nV\u00ed d\u1ee5, m\u1ed9t nh\u00e0 ph\u00e2n t\u00edch c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh li\u1ec7u l\u1ee3i nhu\u1eadn c\u1ee7a m\u1ed9t c\u1ed5 phi\u1ebfu c\u1ee5 th\u1ec3 c\u00f3 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 so v\u1edbi m\u1ee9c trung b\u00ecnh c\u1ee7a ng\u00e0nh hay kh\u00f4ng.\n<h2>S\u1ef1 Kh\u00e1c Bi\u1ec7t Gi\u1eefa Ki\u1ec3m \u0110\u1ecbnh T v\u00e0 Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\nM\u1eb7c d\u00f9 c\u1ea3 hai ki\u1ec3m \u0111\u1ecbnh \u0111\u1ec1u nh\u1eb1m ki\u1ec3m tra gi\u1ea3 thuy\u1ebft, nh\u01b0ng \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang kh\u00e1c nhau:\n<table>\n<tbody>\n<tr>\n<th>Kh\u00eda C\u1ea1nh<\/th>\n<th>Ki\u1ec3m \u0110\u1ecbnh Z<\/th>\n<th>Ki\u1ec3m \u0110\u1ecbnh T<\/th>\n<\/tr>\n<tr>\n<td>K\u00edch Th\u01b0\u1edbc M\u1eabu<\/td>\n<td>L\u1edbn (n &gt; 30)<\/td>\n<td>Nh\u1ecf (n &lt; 30)<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 L\u1ec7ch Chu\u1ea9n Qu\u1ea7n Th\u1ec3<\/td>\n<td>\u0110\u01b0\u1ee3c bi\u1ebft<\/td>\n<td>Kh\u00f4ng bi\u1ebft<\/td>\n<\/tr>\n<tr>\n<td>S\u1eed D\u1ee5ng<\/td>\n<td>So s\u00e1nh m\u1eabu v\u1edbi qu\u1ea7n th\u1ec3<\/td>\n<td>So s\u00e1nh hai trung b\u00ecnh m\u1eabu<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nTr\u00e1i ng\u01b0\u1ee3c v\u1edbi c\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y, ki\u1ec3m \u0111\u1ecbnh t ph\u00f9 h\u1ee3p h\u01a1n khi k\u00edch th\u01b0\u1edbc m\u1eabu nh\u1ecf v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c bi\u1ebft. Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa c\u00e1c ki\u1ec3m \u0111\u1ecbnh n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c xem x\u00e9t.\n<h2>Pocket Option v\u00e0 Giao D\u1ecbch Nhanh<\/h2>\nPocket Option l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng \u01b0a th\u00edch cho giao d\u1ecbch nhanh, trang b\u1ecb cho c\u00e1c nh\u00e0 giao d\u1ecbch kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 th\u1ed1ng k\u00ea nh\u01b0 ki\u1ec3m \u0111\u1ecbnh z \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111i\u1ec1u ki\u1ec7n th\u1ecb tr\u01b0\u1eddng v\u00e0 tinh ch\u1ec9nh chi\u1ebfn l\u01b0\u1ee3c giao d\u1ecbch. Giao di\u1ec7n tr\u1ef1c quan v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch tinh vi c\u1ee7a n\u00f3 gi\u00fap c\u00e1c nh\u00e0 giao d\u1ecbch \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch t\u1ef1 tin.\n\n[cta_button text=\"B\u1eaft \u0110\u1ea7u Giao D\u1ecbch\"]\n<h2>S\u1ef1 Th\u1eadt Th\u00fa V\u1ecb<\/h2>\nB\u1ea1n c\u00f3 bi\u1ebft r\u1eb1ng c\u00f4ng th\u1ee9c n\u00e0y ban \u0111\u1ea7u \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi nh\u00e0 th\u1ed1ng k\u00ea William Sealy Gosset d\u01b0\u1edbi b\u00fat danh \"Student\"? Ban \u0111\u1ea7u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng trong s\u1ea3n xu\u1ea5t bia, n\u00f3 \u0111\u00e3 ph\u00e1t tri\u1ec3n th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n c\u1ee7a ph\u00e2n t\u00edch t\u00e0i ch\u00ednh v\u00e0 ki\u1ec3m tra gi\u1ea3 thuy\u1ebft trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau. T\u00ednh linh ho\u1ea1t v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a n\u00f3 l\u00e0m cho n\u00f3 tr\u1edf n\u00ean v\u00f4 gi\u00e1 cho c\u1ea3 nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt v\u00e0 \u1ee9ng d\u1ee5ng t\u00e0i ch\u00ednh th\u1ef1c ti\u1ec5n.\n<h2>V\u00ed D\u1ee5 Th\u1ef1c T\u1ebf V\u1ec1 Ki\u1ec3m \u0110\u1ecbnh Z Trong Ph\u00e2n T\u00edch T\u00e0i Ch\u00ednh<\/h2>\nH\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng m\u1ed9t nh\u00e0 \u0111\u1ea7u t\u01b0 \u0111ang xem x\u00e9t l\u1ee3i nhu\u1eadn trung b\u00ecnh h\u00e0ng th\u00e1ng c\u1ee7a m\u1ed9t c\u1ed5 phi\u1ebfu so v\u1edbi m\u1ee9c trung b\u00ecnh c\u1ee7a th\u1ecb tr\u01b0\u1eddng. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea n\u00e0y, nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh li\u1ec7u s\u1ef1 kh\u00e1c bi\u1ec7t quan s\u00e1t \u0111\u01b0\u1ee3c c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea hay kh\u00f4ng, gi\u00fap \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh th\u00f4ng minh v\u1ec1 vi\u1ec7c mua, gi\u1eef hay b\u00e1n c\u1ed5 phi\u1ebfu.\n<h2>\u01afu v\u00e0 Nh\u01b0\u1ee3c \u0110i\u1ec3m C\u1ee7a Vi\u1ec7c S\u1eed D\u1ee5ng C\u00f4ng Th\u1ee9c Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\n<table>\n<tbody>\n<tr>\n<th>\u01afu \u0110i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0110i\u1ec3m<\/th>\n<\/tr>\n<tr>\n<td>Cung c\u1ea5p ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh x\u00e1c cho ki\u1ec3m tra gi\u1ea3 thuy\u1ebft<\/td>\n<td>Y\u00eau c\u1ea7u bi\u1ebft \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3<\/td>\n<\/tr>\n<tr>\n<td>Ph\u00f9 h\u1ee3p cho k\u00edch th\u01b0\u1edbc m\u1eabu l\u1edbn<\/td>\n<td>Kh\u00f4ng \u00e1p d\u1ee5ng cho k\u00edch th\u01b0\u1edbc m\u1eabu nh\u1ecf<\/td>\n<\/tr>\n<tr>\n<td>T\u0103ng c\u01b0\u1eddng quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u<\/td>\n<td>Gi\u1ea3 \u0111\u1ecbnh ph\u00e2n ph\u1ed1i chu\u1ea9n c\u1ee7a d\u1eef li\u1ec7u<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>M\u1eb9o \u00c1p D\u1ee5ng C\u00f4ng Th\u1ee9c Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\n<ul>\n \t<li>\u0110\u1ea3m b\u1ea3o k\u00edch th\u01b0\u1edbc m\u1eabu \u0111\u1ee7 l\u1edbn (th\u01b0\u1eddng l\u00e0 n \u2265 30) \u0111\u1ec3 \u0111\u00e1p \u1ee9ng \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m \u0111\u1ecbnh.<\/li>\n \t<li>X\u00e1c nh\u1eadn r\u1eb1ng \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ebft v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/li>\n \t<li>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 ph\u1ea7n m\u1ec1m \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a t\u00ednh to\u00e1n v\u00e0 gi\u1ea3m thi\u1ec3u l\u1ed7i.<\/li>\n<\/ul>\nB\u1eb1ng c\u00e1ch n\u1eafm v\u1eefng c\u00f4ng th\u1ee9c n\u00e0y, c\u00e1c nh\u00e0 ph\u00e2n t\u00edch t\u00e0i ch\u00ednh v\u00e0 nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 n\u00e2ng cao k\u1ef9 n\u0103ng ph\u00e2n t\u00edch c\u1ee7a m\u00ecnh, d\u1eabn \u0111\u1ebfn quy\u1ebft \u0111\u1ecbnh chi\u1ebfn l\u01b0\u1ee3c v\u00e0 th\u00f4ng minh h\u01a1n.\n<div class=\"cta-button\">[cta_button text=\"B\u1eaft \u0110\u1ea7u Giao D\u1ecbch\"]<\/div>\n<\/div>","body_html_source":{"label":"Body HTML","type":"wysiwyg","formatted_value":"<div class=\"custom-html-container\">\n<h2>Hi\u1ec3u V\u1ec1 C\u00f4ng Th\u1ee9c Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\n<p>Ki\u1ec3m \u0111\u1ecbnh z l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea m\u1ea1nh m\u1ebd \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 gi\u1eefa trung b\u00ecnh c\u1ee7a m\u1ed9t m\u1eabu v\u00e0 m\u1ed9t qu\u1ea7n th\u1ec3. N\u00f3 \u0111\u1eb7c bi\u1ec7t c\u00f3 l\u1ee3i khi \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ebft v\u00e0 k\u00edch th\u01b0\u1edbc m\u1eabu l\u1edbn (th\u01b0\u1eddng l\u00e0 n &gt; 30). Trong c\u00e1c t\u00ecnh hu\u1ed1ng t\u00e0i ch\u00ednh, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra gi\u1ea3 thuy\u1ebft v\u1ec1 xu h\u01b0\u1edbng th\u1ecb tr\u01b0\u1eddng, \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t c\u1ed5 phi\u1ebfu v\u00e0 x\u00e1c nh\u1eadn d\u1ef1 b\u00e1o kinh t\u1ebf.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Y\u1ebfu T\u1ed1<\/th>\n<th>M\u00f4 T\u1ea3<\/th>\n<\/tr>\n<tr>\n<td>C\u00f4ng Th\u1ee9c Ki\u1ec3m \u0110\u1ecbnh Z<\/td>\n<td>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 so s\u00e1nh d\u1eef li\u1ec7u m\u1eabu v\u1edbi d\u1eef li\u1ec7u qu\u1ea7n th\u1ec3<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch Th\u01b0\u1edbc M\u1eabu<\/td>\n<td>Th\u01b0\u1eddng l\u1edbn h\u01a1n 30<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 L\u1ec7ch Chu\u1ea9n Qu\u1ea7n Th\u1ec3<\/td>\n<td>Ph\u1ea3i \u0111\u01b0\u1ee3c bi\u1ebft<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u00dd Ngh\u0129a v\u00e0 \u1ee8ng D\u1ee5ng c\u1ee7a Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\n<p>Trong l\u0129nh v\u1ef1c ph\u00e2n t\u00edch t\u00e0i ch\u00ednh, kh\u00e1i ni\u1ec7m n\u00e0y g\u1eafn li\u1ec1n v\u1edbi ki\u1ec3m tra gi\u1ea3 thuy\u1ebft. B\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng n\u00f3, c\u00e1c nh\u00e0 ph\u00e2n t\u00edch c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh li\u1ec7u m\u1ed9t gi\u1ea3 thuy\u1ebft c\u1ee5 th\u1ec3 li\u00ean quan \u0111\u1ebfn m\u1ed9t bi\u1ebfn s\u1ed1 th\u1ecb tr\u01b0\u1eddng ho\u1eb7c kinh t\u1ebf c\u00f3 \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u ch\u1ee9ng minh hay kh\u00f4ng. V\u00ed d\u1ee5, m\u1ed9t nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng ki\u1ec3m \u0111\u1ecbnh n\u00e0y \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 li\u1ec7u m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c giao d\u1ecbch m\u1edbi c\u00f3 mang l\u1ea1i l\u1ee3i nhu\u1eadn cao h\u01a1n m\u1ee9c trung b\u00ecnh c\u1ee7a th\u1ecb tr\u01b0\u1eddng hay kh\u00f4ng.<\/p>\n<h2>\u0110i\u1ec1u Ki\u1ec7n Cho Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\n<p>M\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a ki\u1ec3m \u0111\u1ecbnh:<\/p>\n<ul>\n<li>D\u1eef li\u1ec7u m\u1eabu n\u00ean \u0111\u01b0\u1ee3c ch\u1ecdn ng\u1eabu nhi\u00ean.<\/li>\n<li>K\u00edch th\u01b0\u1edbc m\u1eabu n\u00ean \u0111\u1ee7 l\u1edbn (n &gt; 30).<\/li>\n<li>\u0110\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 ph\u1ea3i \u0111\u01b0\u1ee3c bi\u1ebft.<\/li>\n<li>D\u1eef li\u1ec7u n\u00ean x\u1ea5p x\u1ec9 ph\u00e2n ph\u1ed1i chu\u1ea9n.<\/li>\n<\/ul>\n<p>\u0110\u00e1p \u1ee9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng k\u1ebft qu\u1ea3 \u0111\u00e1ng tin c\u1eady v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi b\u1ed1i c\u1ea3nh t\u00e0i ch\u00ednh \u0111ang \u0111\u01b0\u1ee3c xem x\u00e9t.<\/p>\n<h2>Ki\u1ec3m \u0110\u1ecbnh Z \u0110\u01b0\u1ee3c S\u1eed D\u1ee5ng \u0110\u1ec3 L\u00e0m G\u00ec?<\/h2>\n<p>Ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng t\u00e0i ch\u00ednh, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n<ul>\n<li>So s\u00e1nh l\u1ee3i nhu\u1eadn c\u1ed5 phi\u1ebfu v\u1edbi m\u1ee9c trung b\u00ecnh c\u1ee7a th\u1ecb tr\u01b0\u1eddng<\/li>\n<li>\u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 c\u1ee7a chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ea7u t\u01b0<\/li>\n<li>Ki\u1ec3m tra c\u00e1c l\u00fd thuy\u1ebft kinh t\u1ebf<\/li>\n<li>Ph\u00e2n t\u00edch c\u00e1c y\u1ebfu t\u1ed1 r\u1ee7i ro trong danh m\u1ee5c \u0111\u1ea7u t\u01b0 t\u00e0i ch\u00ednh<\/li>\n<\/ul>\n<p>V\u00ed d\u1ee5, m\u1ed9t nh\u00e0 ph\u00e2n t\u00edch c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh li\u1ec7u l\u1ee3i nhu\u1eadn c\u1ee7a m\u1ed9t c\u1ed5 phi\u1ebfu c\u1ee5 th\u1ec3 c\u00f3 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 so v\u1edbi m\u1ee9c trung b\u00ecnh c\u1ee7a ng\u00e0nh hay kh\u00f4ng.<\/p>\n<h2>S\u1ef1 Kh\u00e1c Bi\u1ec7t Gi\u1eefa Ki\u1ec3m \u0110\u1ecbnh T v\u00e0 Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\n<p>M\u1eb7c d\u00f9 c\u1ea3 hai ki\u1ec3m \u0111\u1ecbnh \u0111\u1ec1u nh\u1eb1m ki\u1ec3m tra gi\u1ea3 thuy\u1ebft, nh\u01b0ng \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang kh\u00e1c nhau:<\/p>\n<table>\n<tbody>\n<tr>\n<th>Kh\u00eda C\u1ea1nh<\/th>\n<th>Ki\u1ec3m \u0110\u1ecbnh Z<\/th>\n<th>Ki\u1ec3m \u0110\u1ecbnh T<\/th>\n<\/tr>\n<tr>\n<td>K\u00edch Th\u01b0\u1edbc M\u1eabu<\/td>\n<td>L\u1edbn (n &gt; 30)<\/td>\n<td>Nh\u1ecf (n &lt; 30)<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 L\u1ec7ch Chu\u1ea9n Qu\u1ea7n Th\u1ec3<\/td>\n<td>\u0110\u01b0\u1ee3c bi\u1ebft<\/td>\n<td>Kh\u00f4ng bi\u1ebft<\/td>\n<\/tr>\n<tr>\n<td>S\u1eed D\u1ee5ng<\/td>\n<td>So s\u00e1nh m\u1eabu v\u1edbi qu\u1ea7n th\u1ec3<\/td>\n<td>So s\u00e1nh hai trung b\u00ecnh m\u1eabu<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Tr\u00e1i ng\u01b0\u1ee3c v\u1edbi c\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y, ki\u1ec3m \u0111\u1ecbnh t ph\u00f9 h\u1ee3p h\u01a1n khi k\u00edch th\u01b0\u1edbc m\u1eabu nh\u1ecf v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c bi\u1ebft. Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa c\u00e1c ki\u1ec3m \u0111\u1ecbnh n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c xem x\u00e9t.<\/p>\n<h2>Pocket Option v\u00e0 Giao D\u1ecbch Nhanh<\/h2>\n<p>Pocket Option l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng \u01b0a th\u00edch cho giao d\u1ecbch nhanh, trang b\u1ecb cho c\u00e1c nh\u00e0 giao d\u1ecbch kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 th\u1ed1ng k\u00ea nh\u01b0 ki\u1ec3m \u0111\u1ecbnh z \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111i\u1ec1u ki\u1ec7n th\u1ecb tr\u01b0\u1eddng v\u00e0 tinh ch\u1ec9nh chi\u1ebfn l\u01b0\u1ee3c giao d\u1ecbch. Giao di\u1ec7n tr\u1ef1c quan v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch tinh vi c\u1ee7a n\u00f3 gi\u00fap c\u00e1c nh\u00e0 giao d\u1ecbch \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch t\u1ef1 tin.<\/p>\n    <div class=\"po-container po-container_width_article\">\n        <a href=\"\/en\/quick-start\/\" class=\"po-line-banner po-article-page__line-banner\">\n            <svg class=\"svg-image po-line-banner__logo\" fill=\"currentColor\" width=\"auto\" height=\"auto\"\n                 aria-hidden=\"true\">\n                <use href=\"#svg-img-logo-white\"><\/use>\n            <\/svg>\n            <span class=\"po-line-banner__btn\">B\u1eaft \u0110\u1ea7u Giao D\u1ecbch<\/span>\n        <\/a>\n    <\/div>\n    \n<h2>S\u1ef1 Th\u1eadt Th\u00fa V\u1ecb<\/h2>\n<p>B\u1ea1n c\u00f3 bi\u1ebft r\u1eb1ng c\u00f4ng th\u1ee9c n\u00e0y ban \u0111\u1ea7u \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi nh\u00e0 th\u1ed1ng k\u00ea William Sealy Gosset d\u01b0\u1edbi b\u00fat danh &#8220;Student&#8221;? Ban \u0111\u1ea7u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng trong s\u1ea3n xu\u1ea5t bia, n\u00f3 \u0111\u00e3 ph\u00e1t tri\u1ec3n th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n c\u1ee7a ph\u00e2n t\u00edch t\u00e0i ch\u00ednh v\u00e0 ki\u1ec3m tra gi\u1ea3 thuy\u1ebft trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau. T\u00ednh linh ho\u1ea1t v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a n\u00f3 l\u00e0m cho n\u00f3 tr\u1edf n\u00ean v\u00f4 gi\u00e1 cho c\u1ea3 nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt v\u00e0 \u1ee9ng d\u1ee5ng t\u00e0i ch\u00ednh th\u1ef1c ti\u1ec5n.<\/p>\n<h2>V\u00ed D\u1ee5 Th\u1ef1c T\u1ebf V\u1ec1 Ki\u1ec3m \u0110\u1ecbnh Z Trong Ph\u00e2n T\u00edch T\u00e0i Ch\u00ednh<\/h2>\n<p>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng m\u1ed9t nh\u00e0 \u0111\u1ea7u t\u01b0 \u0111ang xem x\u00e9t l\u1ee3i nhu\u1eadn trung b\u00ecnh h\u00e0ng th\u00e1ng c\u1ee7a m\u1ed9t c\u1ed5 phi\u1ebfu so v\u1edbi m\u1ee9c trung b\u00ecnh c\u1ee7a th\u1ecb tr\u01b0\u1eddng. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea n\u00e0y, nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh li\u1ec7u s\u1ef1 kh\u00e1c bi\u1ec7t quan s\u00e1t \u0111\u01b0\u1ee3c c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea hay kh\u00f4ng, gi\u00fap \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh th\u00f4ng minh v\u1ec1 vi\u1ec7c mua, gi\u1eef hay b\u00e1n c\u1ed5 phi\u1ebfu.<\/p>\n<h2>\u01afu v\u00e0 Nh\u01b0\u1ee3c \u0110i\u1ec3m C\u1ee7a Vi\u1ec7c S\u1eed D\u1ee5ng C\u00f4ng Th\u1ee9c Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\n<table>\n<tbody>\n<tr>\n<th>\u01afu \u0110i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0110i\u1ec3m<\/th>\n<\/tr>\n<tr>\n<td>Cung c\u1ea5p ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh x\u00e1c cho ki\u1ec3m tra gi\u1ea3 thuy\u1ebft<\/td>\n<td>Y\u00eau c\u1ea7u bi\u1ebft \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3<\/td>\n<\/tr>\n<tr>\n<td>Ph\u00f9 h\u1ee3p cho k\u00edch th\u01b0\u1edbc m\u1eabu l\u1edbn<\/td>\n<td>Kh\u00f4ng \u00e1p d\u1ee5ng cho k\u00edch th\u01b0\u1edbc m\u1eabu nh\u1ecf<\/td>\n<\/tr>\n<tr>\n<td>T\u0103ng c\u01b0\u1eddng quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u<\/td>\n<td>Gi\u1ea3 \u0111\u1ecbnh ph\u00e2n ph\u1ed1i chu\u1ea9n c\u1ee7a d\u1eef li\u1ec7u<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>M\u1eb9o \u00c1p D\u1ee5ng C\u00f4ng Th\u1ee9c Ki\u1ec3m \u0110\u1ecbnh Z<\/h2>\n<ul>\n<li>\u0110\u1ea3m b\u1ea3o k\u00edch th\u01b0\u1edbc m\u1eabu \u0111\u1ee7 l\u1edbn (th\u01b0\u1eddng l\u00e0 n \u2265 30) \u0111\u1ec3 \u0111\u00e1p \u1ee9ng \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m \u0111\u1ecbnh.<\/li>\n<li>X\u00e1c nh\u1eadn r\u1eb1ng \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ebft v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/li>\n<li>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 ph\u1ea7n m\u1ec1m \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a t\u00ednh to\u00e1n v\u00e0 gi\u1ea3m thi\u1ec3u l\u1ed7i.<\/li>\n<\/ul>\n<p>B\u1eb1ng c\u00e1ch n\u1eafm v\u1eefng c\u00f4ng th\u1ee9c n\u00e0y, c\u00e1c nh\u00e0 ph\u00e2n t\u00edch t\u00e0i ch\u00ednh v\u00e0 nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 n\u00e2ng cao k\u1ef9 n\u0103ng ph\u00e2n t\u00edch c\u1ee7a m\u00ecnh, d\u1eabn \u0111\u1ebfn quy\u1ebft \u0111\u1ecbnh chi\u1ebfn l\u01b0\u1ee3c v\u00e0 th\u00f4ng minh h\u01a1n.<\/p>\n<div class=\"cta-button\">    <div class=\"po-container po-container_width_article\">\n        <a href=\"\/en\/quick-start\/\" class=\"po-line-banner po-article-page__line-banner\">\n            <svg class=\"svg-image po-line-banner__logo\" fill=\"currentColor\" width=\"auto\" height=\"auto\"\n                 aria-hidden=\"true\">\n                <use href=\"#svg-img-logo-white\"><\/use>\n            <\/svg>\n            <span class=\"po-line-banner__btn\">B\u1eaft \u0110\u1ea7u Giao D\u1ecbch<\/span>\n        <\/a>\n    <\/div>\n    <\/div>\n<\/div>\n"},"faq":[{"question":"T\u1ea1i sao c\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z kh\u00f4ng th\u1ec3 thi\u1ebfu trong ph\u00e2n t\u00edch t\u00e0i ch\u00ednh?","answer":"C\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu trong ph\u00e2n t\u00edch t\u00e0i ch\u00ednh v\u00ec n\u00f3 cung c\u1ea5p n\u1ec1n t\u1ea3ng th\u1ed1ng k\u00ea \u0111\u1ec3 so s\u00e1nh d\u1eef li\u1ec7u m\u1eabu v\u1edbi d\u1eef li\u1ec7u t\u1ed5ng th\u1ec3, cho ph\u00e9p c\u00e1c nh\u00e0 ph\u00e2n t\u00edch x\u00e1c nh\u1eadn gi\u1ea3 thuy\u1ebft v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t."},{"question":"Khi n\u00e0o n\u00ean \u01b0u ti\u00ean s\u1eed d\u1ee5ng ki\u1ec3m \u0111\u1ecbnh t so v\u1edbi ki\u1ec3m \u0111\u1ecbnh z?","answer":"Ki\u1ec3m \u0111\u1ecbnh t \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng khi k\u00edch th\u01b0\u1edbc m\u1eabu nh\u1ecf (th\u01b0\u1eddng l\u00e0 n < 30) v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 ch\u01b0a \u0111\u01b0\u1ee3c bi\u1ebft."},{"question":"C\u00f4ng th\u1ee9c ki\u1ec3m tra z c\u00f3 \u00e1p d\u1ee5ng cho c\u00e1c ph\u00e2n ph\u1ed1i d\u1eef li\u1ec7u kh\u00f4ng chu\u1ea9n kh\u00f4ng?","answer":"C\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng d\u1eef li\u1ec7u ph\u00e2n ph\u1ed1i g\u1ea7n nh\u01b0 b\u00ecnh th\u01b0\u1eddng. N\u1ebfu d\u1eef li\u1ec7u l\u1ec7ch \u0111\u00e1ng k\u1ec3 kh\u1ecfi t\u00ednh b\u00ecnh th\u01b0\u1eddng, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea thay th\u1ebf c\u00f3 th\u1ec3 ph\u00f9 h\u1ee3p h\u01a1n."},{"question":"Pocket Option h\u1ed7 tr\u1ee3 vi\u1ec7c s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z nh\u01b0 th\u1ebf n\u00e0o?","answer":"Pocket Option cung c\u1ea5p m\u1ed9t n\u1ec1n t\u1ea3ng th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng c\u00f9ng v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch ti\u00ean ti\u1ebfn, cho ph\u00e9p c\u00e1c nh\u00e0 giao d\u1ecbch \u00e1p d\u1ee5ng hi\u1ec7u qu\u1ea3 c\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z trong c\u00e1c chi\u1ebfn l\u01b0\u1ee3c giao d\u1ecbch nhanh c\u1ee7a h\u1ecd, n\u00e2ng cao kh\u1ea3 n\u0103ng \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u."},{"question":"Nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a vi\u1ec7c ch\u1ec9 d\u1ef1a v\u00e0o c\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z cho ph\u00e2n t\u00edch t\u00e0i ch\u00ednh l\u00e0 g\u00ec?","answer":"M\u1eb7c d\u00f9 c\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z r\u1ea5t m\u1ea1nh m\u1ebd, vi\u1ec7c ch\u1ec9 d\u1ef1a v\u00e0o n\u00f3 c\u00f3 th\u1ec3 b\u1ecf qua c\u00e1c y\u1ebfu t\u1ed1 quan tr\u1ecdng kh\u00e1c. N\u00f3 y\u00eau c\u1ea7u ki\u1ebfn th\u1ee9c v\u1ec1 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 v\u00e0 gi\u1ea3 \u0111\u1ecbnh ph\u00e2n ph\u1ed1i chu\u1ea9n, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c. Do \u0111\u00f3, n\u00f3 n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch kh\u00e1c \u0111\u1ec3 c\u00f3 m\u1ed9t ph\u00e2n t\u00edch to\u00e0n di\u1ec7n."}],"faq_source":{"label":"FAQ","type":"repeater","formatted_value":[{"question":"T\u1ea1i sao c\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z kh\u00f4ng th\u1ec3 thi\u1ebfu trong ph\u00e2n t\u00edch t\u00e0i ch\u00ednh?","answer":"C\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu trong ph\u00e2n t\u00edch t\u00e0i ch\u00ednh v\u00ec n\u00f3 cung c\u1ea5p n\u1ec1n t\u1ea3ng th\u1ed1ng k\u00ea \u0111\u1ec3 so s\u00e1nh d\u1eef li\u1ec7u m\u1eabu v\u1edbi d\u1eef li\u1ec7u t\u1ed5ng th\u1ec3, cho ph\u00e9p c\u00e1c nh\u00e0 ph\u00e2n t\u00edch x\u00e1c nh\u1eadn gi\u1ea3 thuy\u1ebft v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t."},{"question":"Khi n\u00e0o n\u00ean \u01b0u ti\u00ean s\u1eed d\u1ee5ng ki\u1ec3m \u0111\u1ecbnh t so v\u1edbi ki\u1ec3m \u0111\u1ecbnh z?","answer":"Ki\u1ec3m \u0111\u1ecbnh t \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng khi k\u00edch th\u01b0\u1edbc m\u1eabu nh\u1ecf (th\u01b0\u1eddng l\u00e0 n < 30) v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 ch\u01b0a \u0111\u01b0\u1ee3c bi\u1ebft."},{"question":"C\u00f4ng th\u1ee9c ki\u1ec3m tra z c\u00f3 \u00e1p d\u1ee5ng cho c\u00e1c ph\u00e2n ph\u1ed1i d\u1eef li\u1ec7u kh\u00f4ng chu\u1ea9n kh\u00f4ng?","answer":"C\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng d\u1eef li\u1ec7u ph\u00e2n ph\u1ed1i g\u1ea7n nh\u01b0 b\u00ecnh th\u01b0\u1eddng. N\u1ebfu d\u1eef li\u1ec7u l\u1ec7ch \u0111\u00e1ng k\u1ec3 kh\u1ecfi t\u00ednh b\u00ecnh th\u01b0\u1eddng, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea thay th\u1ebf c\u00f3 th\u1ec3 ph\u00f9 h\u1ee3p h\u01a1n."},{"question":"Pocket Option h\u1ed7 tr\u1ee3 vi\u1ec7c s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z nh\u01b0 th\u1ebf n\u00e0o?","answer":"Pocket Option cung c\u1ea5p m\u1ed9t n\u1ec1n t\u1ea3ng th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng c\u00f9ng v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch ti\u00ean ti\u1ebfn, cho ph\u00e9p c\u00e1c nh\u00e0 giao d\u1ecbch \u00e1p d\u1ee5ng hi\u1ec7u qu\u1ea3 c\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z trong c\u00e1c chi\u1ebfn l\u01b0\u1ee3c giao d\u1ecbch nhanh c\u1ee7a h\u1ecd, n\u00e2ng cao kh\u1ea3 n\u0103ng \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u."},{"question":"Nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a vi\u1ec7c ch\u1ec9 d\u1ef1a v\u00e0o c\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z cho ph\u00e2n t\u00edch t\u00e0i ch\u00ednh l\u00e0 g\u00ec?","answer":"M\u1eb7c d\u00f9 c\u00f4ng th\u1ee9c ki\u1ec3m \u0111\u1ecbnh z r\u1ea5t m\u1ea1nh m\u1ebd, vi\u1ec7c ch\u1ec9 d\u1ef1a v\u00e0o n\u00f3 c\u00f3 th\u1ec3 b\u1ecf qua c\u00e1c y\u1ebfu t\u1ed1 quan tr\u1ecdng kh\u00e1c. N\u00f3 y\u00eau c\u1ea7u ki\u1ebfn th\u1ee9c v\u1ec1 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a qu\u1ea7n th\u1ec3 v\u00e0 gi\u1ea3 \u0111\u1ecbnh ph\u00e2n ph\u1ed1i chu\u1ea9n, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c. Do \u0111\u00f3, n\u00f3 n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch kh\u00e1c \u0111\u1ec3 c\u00f3 m\u1ed9t ph\u00e2n t\u00edch to\u00e0n di\u1ec7n."}]}},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.8 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>C\u00f4ng th\u1ee9c Ki\u1ec3m \u0111\u1ecbnh Z trong Ph\u00e2n t\u00edch T\u00e0i ch\u00ednh<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pocketoption.com\/blog\/vt\/knowledge-base\/learning\/z-test-formula\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00f4ng th\u1ee9c Ki\u1ec3m \u0111\u1ecbnh Z trong Ph\u00e2n t\u00edch T\u00e0i ch\u00ednh\" \/>\n<meta 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