{"id":10891,"date":"2020-04-24T17:47:21","date_gmt":"2020-04-24T10:47:21","guid":{"rendered":"https:\/\/dtmconsulting.vn\/?p=10891"},"modified":"2023-12-27T18:00:39","modified_gmt":"2023-12-27T11:00:39","slug":"cac-phuong-phap-chon-mau-trong-nghien-cuu-thi-truong-ma-ban-can-phai-biet","status":"publish","type":"post","link":"https:\/\/dtmconsulting.vn\/en\/cac-phuong-phap-chon-mau-trong-nghien-cuu-thi-truong-ma-ban-can-phai-biet\/","title":{"rendered":"C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu trong nghi\u00ean c\u1ee9u th\u1ecb tr\u01b0\u1eddng m\u00e0 b\u1ea1n c\u1ea7n ph\u1ea3i bi\u1ebft"},"content":{"rendered":"<p>Vi\u1ec7c ch\u1ecdn m\u1eabu v\u00e0 x\u00e1c \u0111\u1ecbnh c\u1ee1 m\u1eabu l\u00e0 m\u1ed9t c\u00f4ng vi\u1ec7c quan tr\u1ecdng v\u00e0 c\u1ea7n thi\u1ebft trong nghi\u00ean c\u1ee9u marketing \u0111\u1ed1i v\u1edbi c\u1ea3 ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u \u0111\u1ecbnh t\u00ednh v\u00e0 \u0111\u1ecbnh l\u01b0\u1ee3ng.<\/p>\n<p>Nh\u01b0ng l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn m\u1eabu v\u00e0 x\u00e1c \u0111\u1ecbnh c\u1ee1 m\u1eabu ra sao cho h\u1ee3p l\u00fd l\u00e0 c\u00e2u h\u1ecfi m\u00e0 kh\u00f4ng ph\u1ea3i ai c\u0169ng tr\u1ea3 l\u1eddi \u0111\u01b0\u1ee3c.<\/p>\n<p>C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu trong nghi\u00ean c\u1ee9u marketing bao g\u1ed3m ch\u1ecdn m\u1eabu x\u00e1c su\u1ea5t v\u00e0 phi x\u00e1c su\u1ea5t, c\u1ee5 th\u1ec3:<\/p>\n<ul>\n<li>Ch\u1ecdn m\u1eabu thu\u1eadn ti\u1ec7n<\/li>\n<li>Ch\u1ecdn m\u1eabu ph\u00e1n \u0111o\u00e1n<\/li>\n<li>Ch\u1ecdn m\u1eabu t\u1ef7 l\u1ec7<\/li>\n<li>Ch\u1ecdn m\u1eabu t\u00edch l\u0169y nhanh<\/li>\n<li>Ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean \u0111\u01a1n gi\u1ea3n<\/li>\n<li>Ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean c\u00f3 h\u1ec7 th\u1ed1ng<\/li>\n<li>Ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean ph\u00e2n t\u1ea7ng<\/li>\n<li>Ch\u1ecdn m\u1eabu theo c\u1ee5m<\/li>\n<\/ul>\n<p>B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y c\u1ee7a DTM Consulting s\u1ebd \u0111em \u0111\u1ebfn cho b\u1ea1n hi\u1ec3u bi\u1ebft v\u1ec1 c\u00e1c <strong>ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu<\/strong> v\u00e0 c\u00e1ch th\u1ef1c hi\u1ec7n ch\u00fang.<\/p>\n<h2>1-M\u1eabu trong nghi\u00ean c\u1ee9u th\u1ecb tr\u01b0\u1eddng l\u00e0 g\u00ec?<\/h2>\n<p>M\u1eabu l\u00e0 trong m\u1ed9t d\u1ef1 \u00e1n nghi\u00ean c\u1ee9u th\u1ecb tr\u01b0\u1eddng g\u1ed3m t\u1eadp h\u1ee3p c\u00e1c ph\u1ea7n t\u1eed. Trong \u0111\u00f3, m\u1ed7i ph\u1ea7n t\u1eed \u0111\u01b0\u1ee3c thu th\u1eadp th\u00f4ng tin \u0111\u1ec3 l\u00e0m c\u01a1 s\u1edf cho vi\u1ec7c nghi\u00ean c\u1ee9u. Th\u00f4ng th\u01b0\u1eddng th\u00ec trong nghi\u00ean c\u1ee9u marketing, ph\u1ea7n t\u1eed l\u00e0 con ng\u01b0\u1eddi ho\u1eb7c c\u00f3 th\u1ec3 l\u00e0 c\u1eeda h\u00e0ng, doanh nghi\u1ec7p.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-10901\" src=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/chon-mau-trong-nghien-cuu-marketing.png\" alt=\"Ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu trong nghi\u00ean c\u1ee9u marketing\" width=\"512\" height=\"240\" srcset=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/chon-mau-trong-nghien-cuu-marketing.png 512w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/chon-mau-trong-nghien-cuu-marketing-300x141.png 300w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/chon-mau-trong-nghien-cuu-marketing-260x122.png 260w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/chon-mau-trong-nghien-cuu-marketing-50x23.png 50w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/chon-mau-trong-nghien-cuu-marketing-150x70.png 150w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/><\/p>\n<h3>Ti\u00eau ch\u00ed x\u00e1c \u0111\u1ecbnh c\u1ee1 m\u1eabu<\/h3>\n<p>C\u00f3 r\u1ea5t nhi\u1ec1u y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c x\u00e1c \u0111\u1ecbnh c\u1ee1 m\u1eabu nghi\u00ean c\u1ee9u nh\u01b0 m\u1ee5c ti\u00eau, n\u1ed9i dung, ph\u1ea1m vi nghi\u00ean c\u1ee9u, ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu,&#8230; Tuy nhi\u00ean, nh\u1eefng y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng l\u1edbn nh\u1ea5t \u0111\u1ebfn vi\u1ec7c x\u00e1c \u0111\u1ecbnh c\u1ee1 m\u1eabu l\u00e0:<\/p>\n<ul>\n<li>S\u1ef1 phong ph\u00fa c\u1ee7a t\u1ed5ng th\u1ec3 nghi\u00ean c\u1ee9u: t\u1ed5ng th\u1ec3 nghi\u00ean c\u1ee9u c\u00e0ng l\u1edbn, th\u01b0\u1eddng c\u1ea7n ch\u1ecdn m\u1eabu c\u00e0ng l\u1edbn.<\/li>\n<li>\u0110\u1ed9 tin c\u1eady mu\u1ed1n \u0111\u1ea1t \u0111\u01b0\u1ee3c. M\u1eabu c\u00e0ng l\u1edbn th\u00ec \u0111\u1ed9 tin c\u1eady c\u00e0ng cao.<\/li>\n<li>Sai s\u1ed1 cho ph\u00e9p<\/li>\n<\/ul>\n<p><strong>&gt;&gt;&gt; Xem th\u00eam: <a href=\"https:\/\/dtmconsulting.vn\/en\/phuong-phap-khao-sat\/\">Ph\u01b0\u01a1ng ph\u00e1p kh\u1ea3o s\u00e1t trong nghi\u00ean c\u1ee9u th\u1ecb tr\u01b0\u1eddng \u2013 C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n<\/a><\/strong><\/p>\n<h2>2-V\u00ec sao c\u1ea7n ph\u1ea3i ch\u1ecdn m\u1eabu<\/h2>\n<p>Vi\u1ec7c l\u1ea5y m\u1eabu trong nghi\u00ean c\u1ee9u trong marketing \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi nh\u1eefng l\u00fd do sau:<\/p>\n<ul>\n<li>Ng\u01b0\u1eddi thu th\u1eadp th\u00f4ng tin b\u1ecb gi\u1edbi h\u1ea1n v\u1ec1 m\u1eb7t th\u1eddi gian. Do \u0111\u00f3, kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c s\u1ed1 l\u01b0\u1ee3ng ng\u01b0\u1eddi qu\u00e1 l\u1edbn trong th\u1eddi gian b\u1ecb h\u1ea1n ch\u1ebf.<\/li>\n<li>V\u1ea5n \u0111\u1ec1 chi ph\u00ed l\u00e0 m\u1ed9t quan tr\u1ecdng khi m\u00e0 m\u1ed9t nghi\u00ean c\u1ee9u th\u1ecb tr\u01b0\u1eddng th\u01b0\u1eddng c\u1ea7n m\u1ed9t chi ph\u00ed kh\u00e1 l\u1edbn. Vi\u1ec7c \u0111i\u1ec1u tra tr\u00ean m\u1ed9t m\u1eabu h\u1ee3p l\u00fd s\u1ebd gi\u00fap cho nghi\u00ean c\u1ee9u t\u1ed1i \u01b0u \u0111\u01b0\u1ee3c v\u1ec1 m\u1eb7t chi ph\u00ed, \u0111\u1ed3ng th\u1eddi v\u1eabn \u0111\u1ea3m b\u1ea3o thu th\u1eadp \u0111\u1ea7y \u0111\u1ee7 th\u00f4ng tin th\u00edch h\u1ee3p.<\/li>\n<li>Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, vi\u1ec7c \u0111i\u1ec1u tra t\u1ed5ng th\u1ec3 kh\u00f4ng th\u1ec3 t\u0103ng th\u00eam \u0111\u1ed9 ch\u00ednh x\u00e1c cho nghi\u00ean c\u1ee9u m\u00e0 l\u1ea1i khi\u1ebfn t\u1ed1n k\u00e9m chi ph\u00ed v\u00e0 m\u1ea5t th\u1eddi gian.<\/li>\n<\/ul>\n<h2>3-C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu<\/h2>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-10884 lazyload\" data-src=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/ky-nang-phong-van-nhom.jpg\" alt=\"Ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu\" width=\"600\" height=\"400\" data-srcset=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/ky-nang-phong-van-nhom.jpg 600w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/ky-nang-phong-van-nhom-300x200.jpg 300w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/ky-nang-phong-van-nhom-219x146.jpg 219w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/ky-nang-phong-van-nhom-50x33.jpg 50w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/04\/ky-nang-phong-van-nhom-113x75.jpg 113w\" data-sizes=\"(max-width: 600px) 100vw, 600px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 600px; --smush-placeholder-aspect-ratio: 600\/400;\" \/><\/p>\n<h3>3.1-Ch\u1ecdn m\u1eabu phi x\u00e1c su\u1ea5t<\/h3>\n<h4>Ch\u1ecdn m\u1eabu thu\u1eadn ti\u1ec7n (convenience sampling)<\/h4>\n<p>Trong ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, ng\u01b0\u1eddi nghi\u00ean c\u1ee9u ch\u1ecdn ra c\u00e1c \u0111on v\u1ecb l\u1ea5y m\u1eabu d\u1ef1a v\u00e0o \u201cs\u1ee5 thu\u1eadn ti\u1ec7n\u201d hay \u201ct\u00ednh d\u1ec5 ti\u1ebfp c\u1eadn\u201d. V\u1edbi ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu thu\u1eadn ti\u1ec7n, nh\u00e0 nghi\u00ean c\u1ee9u r\u1ea5t kh\u00f3 x\u00e1c \u0111\u1ecbnh t\u00ednh \u0111\u1ea1i di\u1ec7n c\u1ee7a m\u1eabu.<\/p>\n<p>S\u1ef1 l\u1ef1a ch\u1ecdn c\u00e1c \u0111\u01a1n v\u1ecb m\u1eabu mang t\u00ednh ch\u1ee7 quan c\u1ee7a ng\u01b0\u1eddi nghi\u00ean c\u1ee9u, do \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u00edt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i.<\/p>\n<p><img decoding=\"async\" class=\"size-medium wp-image-15751 aligncenter lazyload\" data-src=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/12\/Lua-chon-doi-tuong-tham-gia-khao-sat-300x161.png\" alt=\"L\u1ef1a ch\u1ecdn \u0111\u1ed1i t\u01b0\u1ee3ng tham gia kh\u1ea3o s\u00e1t\" width=\"300\" height=\"161\" data-srcset=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/12\/Lua-chon-doi-tuong-tham-gia-khao-sat-300x161.png 300w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/12\/Lua-chon-doi-tuong-tham-gia-khao-sat-260x140.png 260w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/12\/Lua-chon-doi-tuong-tham-gia-khao-sat-50x27.png 50w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/12\/Lua-chon-doi-tuong-tham-gia-khao-sat-140x75.png 140w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/12\/Lua-chon-doi-tuong-tham-gia-khao-sat.png 745w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/161;\" \/><\/p>\n<h4>Ch\u1ecdn m\u1eabu ph\u00e1n \u0111o\u00e1n (judgement sampling)<\/h4>\n<p>Nh\u1eefng \u0111\u01a1n v\u1ecb c\u1ee7a m\u1eabu \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn b\u1edfi nh\u00e0 nghi\u00ean c\u1ee9u ngh\u0129 c\u00f3 th\u1ec3 th\u1ecfa m\u00e3n m\u1ed9t ti\u00eau chu\u1ea9n n\u00e0o \u0111\u00f3.<\/p>\n<p>S\u1ef1 l\u1ef1a ch\u1ecdn m\u1eabu mang t\u00ednh ch\u1ee7 quan, n\u00ean c\u0169ng \u00edt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n<h4>Ch\u1ecdn m\u1eabu t\u1ef7 l\u1ec7 (quota sample)<\/h4>\n<p>\u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu m\u00e0 trong \u0111\u00f3 nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u1ea3m b\u1ea3o m\u1eabu \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn c\u00f3 t\u1ef7 l\u1ec7 t\u01b0\u01a1ng \u1ee9ng theo c\u00e1c tham s\u1ed1 quan tr\u1ecdng nh\u01b0 tu\u1ed5i, ngh\u1ec1 nghi\u1ec7p, gi\u1edbi t\u00ednh.<\/p>\n<p>C\u00e1c ph\u1ea7n t\u1eed c\u0169ng \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn theo ch\u1ee7 \u00fd c\u1ee7a nh\u00e0 nghi\u00ean c\u1ee9u, mang t\u00ednh ch\u1ee7 quan.<\/p>\n<h4>Ch\u1ecdn m\u1eabu t\u00edch l\u0169y nhanh (nowball sampling)<\/h4>\n<p>Nh\u1eefng ph\u1ea7n t\u1eed ban \u0111\u1ea7u \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p x\u00e1c su\u1ea5t, nh\u01b0ng nh\u1eefng ph\u1ea7n t\u1eed b\u1ed5 sung ti\u1ebfp \u0111\u00f3 \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi c\u00e1c \u0111\u01a1n v\u1ecb l\u1ea5y m\u1eabu ban \u0111\u1ea7u (nh\u1edd gi\u1edbi thi\u1ec7u).<\/p>\n<p class=\"entry-title\">Xem th\u00eam: <a href=\"https:\/\/dtmconsulting.vn\/en\/khao-sat-trai-nghiem-khach-hang\/\">Kh\u1ea3o s\u00e1t tr\u1ea3i nghi\u1ec7m kh\u00e1ch h\u00e0ng \u2013 M\u1eabu b\u1ea3ng c\u00e2u h\u1ecfi kh\u1ea3o s\u00e1t<\/a><\/p>\n<p><img decoding=\"async\" class=\"size-medium wp-image-11104 aligncenter lazyload\" data-src=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/05\/M\u1eabu-b\u1ea3ng-c\u00e2u-h\u1ecfi-kh\u1ea3o-s\u00e1t-h\u00e0nh-vi-c\u1ee7a-ng\u01b0\u1eddi-ti\u00eau-d\u00f9ng-300x157.jpg\" alt=\"\" width=\"300\" height=\"157\" data-srcset=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/05\/M\u1eabu-b\u1ea3ng-c\u00e2u-h\u1ecfi-kh\u1ea3o-s\u00e1t-h\u00e0nh-vi-c\u1ee7a-ng\u01b0\u1eddi-ti\u00eau-d\u00f9ng-300x157.jpg 300w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/05\/M\u1eabu-b\u1ea3ng-c\u00e2u-h\u1ecfi-kh\u1ea3o-s\u00e1t-h\u00e0nh-vi-c\u1ee7a-ng\u01b0\u1eddi-ti\u00eau-d\u00f9ng-768x401.jpg 768w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/05\/M\u1eabu-b\u1ea3ng-c\u00e2u-h\u1ecfi-kh\u1ea3o-s\u00e1t-h\u00e0nh-vi-c\u1ee7a-ng\u01b0\u1eddi-ti\u00eau-d\u00f9ng-260x136.jpg 260w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/05\/M\u1eabu-b\u1ea3ng-c\u00e2u-h\u1ecfi-kh\u1ea3o-s\u00e1t-h\u00e0nh-vi-c\u1ee7a-ng\u01b0\u1eddi-ti\u00eau-d\u00f9ng-50x26.jpg 50w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/05\/M\u1eabu-b\u1ea3ng-c\u00e2u-h\u1ecfi-kh\u1ea3o-s\u00e1t-h\u00e0nh-vi-c\u1ee7a-ng\u01b0\u1eddi-ti\u00eau-d\u00f9ng-144x75.jpg 144w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2020\/05\/M\u1eabu-b\u1ea3ng-c\u00e2u-h\u1ecfi-kh\u1ea3o-s\u00e1t-h\u00e0nh-vi-c\u1ee7a-ng\u01b0\u1eddi-ti\u00eau-d\u00f9ng.jpg 940w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/157;\" \/><\/p>\n<h3>3.2-Ch\u1ecdn m\u1eabu x\u00e1c su\u1ea5t\/ng\u1eabu nhi\u00ean (<strong>probability sampling)<\/strong><\/h3>\n<h4>Ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean \u0111\u01a1n gi\u1ea3n (simple random sampling)<\/h4>\n<p>Ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu v\u1edbi \u0111\u00fang nh\u01b0 t\u00ean g\u1ecdi c\u1ee7a n\u00f3, ho\u00e0n to\u00e0n ng\u1eabu nhi\u00ean. Do \u0111\u00f3, m\u1ed7i \u0111\u01a1n v\u1ecb l\u1ea5y m\u1eabu \u0111\u1ec1u c\u00f3 c\u01a1 h\u1ed9i hi\u1ec7n di\u1ec7n trong m\u1eabu b\u1eb1ng nhau.<\/p>\n<p>Ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean c\u00f3 hai lo\u1ea1i: ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean c\u00f3 s\u1ef1 thay th\u1ebf ho\u1eb7c kh\u00f4ng c\u00f3 s\u1ef1 thay th\u1ebf. Trong l\u1ea5y m\u1eabu ng\u1eabu nhi\u00ean c\u00f3 s\u1ef1 thay th\u1ebf, c\u00e1c ph\u1ea7n t\u1eed \u0111\u01b0\u1ee3c ch\u1ecdn m\u1eabu lu\u00f4n \u0111\u01b0\u1ee3c thay th\u1ebf tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n s\u1ef1 l\u1ef1a ch\u1ecdn k\u1ebf ti\u1ebfp.<\/p>\n<p>\u01afu \u0111i\u1ec3m l\u1edbn nh\u1ea5t c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0 s\u1ef1 \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 th\u1ef1c hi\u1ec7n.<\/p>\n<p>Tuy nhi\u00ean, nh\u01b0\u1ee3c \u0111i\u1ec3m ch\u1ebft ng\u01b0\u1eddi c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y m\u1eabu c\u00f3 th\u1ec3 sai l\u1ec7ch, kh\u00f4ng mang t\u00ednh \u0111\u1ea1i di\u1ec7n, do \u0111\u00f3 k\u00e9m ch\u00ednh x\u00e1c.<\/p>\n<h4>Ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean c\u00f3 h\u1ec7 th\u1ed1ng (systematic\u00a0sampling)<\/h4>\n<p>Ch\u1ecdn m\u1eabu c\u00f3 h\u1ec7 th\u1ed1ng v\u1edbi s\u1ef1 b\u1eaft \u0111\u1ea7u ng\u1eabu nhi\u00ean l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh b\u1eb1ng c\u00e1ch l\u1ea5y t\u1eebng \u0111\u01a1n v\u1ecb th\u1ee9 k t\u1eeb m\u1ed9t t\u1ed5ng th\u1ec3 nghi\u00ean c\u1ee9u c\u00f3 th\u1ee9 t\u1ef1.<\/p>\n<p>\u0110\u01a1n v\u1ecb \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c ch\u1ecdn m\u1ed9t c\u00e1ch ng\u1eabu nhi\u00ean, k l\u00e0 kho\u1ea3ng c\u00e1ch l\u1ea5y m\u1eabu.<\/p>\n<p>V\u00ed d\u1ee5: ch\u1ecdn k l\u00e0 3. \u0110\u01a1n v\u1ecb \u0111\u1ea7u ti\u00ean c\u00f3 s\u1ed1 th\u1ee9 t\u1ef1 l\u00e0 2, t\u01b0\u01a1ng t\u1ef1, c\u00e1c \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c ch\u1ecdn ti\u1ebfp theo c\u00f3 s\u1ed1 th\u1ee9 t\u1ef1 l\u00e0\u00a0 5, 8, 11,&#8230;<\/p>\n<p><img decoding=\"async\" class=\"size-medium wp-image-15279 aligncenter lazyload\" data-src=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/Khao-sat-trai-nghiem-khach-hang-Mau-bang-cau-hoi-khao-sat-300x156.jpg\" alt=\"Kh\u1ea3o s\u00e1t tr\u1ea3i nghi\u1ec7m kh\u00e1ch h\u00e0ng - M\u1eabu b\u1ea3ng c\u00e2u h\u1ecfi kh\u1ea3o s\u00e1t\" width=\"300\" height=\"156\" data-srcset=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/Khao-sat-trai-nghiem-khach-hang-Mau-bang-cau-hoi-khao-sat-300x156.jpg 300w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/Khao-sat-trai-nghiem-khach-hang-Mau-bang-cau-hoi-khao-sat-768x400.jpg 768w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/Khao-sat-trai-nghiem-khach-hang-Mau-bang-cau-hoi-khao-sat-260x136.jpg 260w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/Khao-sat-trai-nghiem-khach-hang-Mau-bang-cau-hoi-khao-sat-50x26.jpg 50w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/Khao-sat-trai-nghiem-khach-hang-Mau-bang-cau-hoi-khao-sat-144x75.jpg 144w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/Khao-sat-trai-nghiem-khach-hang-Mau-bang-cau-hoi-khao-sat.jpg 940w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/156;\" \/><\/p>\n<h4>Ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean ph\u00e2n t\u1ea7ng (stratified sampling)<\/h4>\n<p>Khi m\u00e0 t\u1ed5ng th\u1ec3 nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o t\u1eeb nhi\u1ec1u \u0111\u01a1n v\u1ecb nghi\u00ean c\u1ee9u kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t v\u1edbi nhau li\u00ean quan \u0111\u1ebfn nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m nghi\u00ean c\u1ee9u. \u0110\u1ec3 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n l\u1ea5y m\u1eabu th\u00ec c\u1ea7n ph\u1ea3i ph\u00e2n chia t\u1ed5ng th\u1ec3 n\u00e0y th\u00e0nh t\u1eebng nh\u00f3m c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m t\u01b0\u01a1ng \u0111\u1ed3ng v\u1edbi nhau.<\/p>\n<p>Ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean ph\u00e2n t\u1ea7ng l\u00e0 ch\u1ecdn m\u1eabu ng\u1eabu nhi\u00ean \u0111\u01a1n gi\u1ea3n t\u1eeb t\u1eebng nh\u00f3m t\u01b0\u01a1ng \u0111\u1ed3ng.<\/p>\n<p>\u01afu \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0 t\u0103ng m\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a vi\u1ec7c \u0111\u00e1nh gi\u00e1 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a t\u1ed5ng th\u1ec3 nghi\u00ean c\u1ee9u, th\u1ef1c hi\u1ec7n thu\u1eadn ti\u1ec7n v\u00e0 m\u1eabu kh\u00e1 to\u00e0n di\u1ec7n.<\/p>\n<h4>Ch\u1ecdn m\u1eabu theo c\u1ee5m (cluster sampling)<\/h4>\n<p>Ch\u1ecdn m\u1eabu theo c\u1ee5m l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh b\u1eb1ng c\u00e1ch l\u1ea5y nh\u1eefng nh\u00f3m ri\u00eang bi\u1ec7t ho\u1eb7c nh\u1eefng c\u1ee5m c\u1ee7a \u0111\u01a1n v\u1ecb nh\u1ecf h\u01a1n.<\/p>\n<p>C\u00e1c c\u1ee5m \u0111\u01b0\u1ee3c ch\u1ecdn ng\u1eabu nhi\u00ean v\u1edbi s\u1ef1 kh\u1edfi \u0111\u1ea7u ng\u1eabu nhi\u00ean.<\/p>\n<p>Tr\u00ean \u0111\u00e2y l\u00e0 g\u1ee3i \u00fd c\u00e1c c\u00e1ch l\u1ea5y m\u1eabu kh\u1ea3 thi trong nghi\u00ean c\u1ee9u marketing hay nghi\u00ean c\u1ee9u th\u1ecb tr\u01b0\u1eddng\/kh\u00e1ch h\u00e0ng. L\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu nghi\u00ean c\u1ee9u th\u1ecb tr\u01b0\u1eddng c\u1ea7n ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n, ngu\u1ed3n l\u1ef1c c\u00f3 s\u1eb5n, v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng nghi\u00ean c\u1ee9u.<\/p>\n<p>N\u1ebfu b\u1ea1n \u0111ang c\u00f2n nhi\u1ec1u b\u0103n kho\u0103n trong vi\u1ec7c ra quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn m\u1eabu nghi\u00ean c\u1ee9u cho ph\u00f9 h\u1ee3p, h\u00e3y <strong><a href=\"https:\/\/dtmconsulting.vn\/en\/lien-he\/\">CONTACT US<\/a><\/strong>\u0111\u1ec3 nh\u1eadn t\u01b0 v\u1ea5n t\u1eeb chuy\u00ean gia t\u1ea1i DTM Consulting!<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-15321 lazyload\" data-src=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/TU-VAN-va-HUONG-DAN-TRIEN-KHAI-nghien-cuu-thi-truong-khach-hang-300x169.png\" alt=\"T\u01af V\u1ea4N v\u00e0 H\u01af\u1edaNG D\u1eaaN, TRI\u1ec2N KHAI nghi\u00ean c\u1ee9u th\u1ecb tr\u01b0\u1eddng, kh\u00e1ch h\u00e0ng\" width=\"700\" height=\"394\" data-srcset=\"https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/TU-VAN-va-HUONG-DAN-TRIEN-KHAI-nghien-cuu-thi-truong-khach-hang-300x169.png 300w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/TU-VAN-va-HUONG-DAN-TRIEN-KHAI-nghien-cuu-thi-truong-khach-hang-1024x576.png 1024w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/TU-VAN-va-HUONG-DAN-TRIEN-KHAI-nghien-cuu-thi-truong-khach-hang-768x432.png 768w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/TU-VAN-va-HUONG-DAN-TRIEN-KHAI-nghien-cuu-thi-truong-khach-hang-1536x864.png 1536w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/TU-VAN-va-HUONG-DAN-TRIEN-KHAI-nghien-cuu-thi-truong-khach-hang-260x146.png 260w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/TU-VAN-va-HUONG-DAN-TRIEN-KHAI-nghien-cuu-thi-truong-khach-hang-50x28.png 50w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/TU-VAN-va-HUONG-DAN-TRIEN-KHAI-nghien-cuu-thi-truong-khach-hang-133x75.png 133w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/TU-VAN-va-HUONG-DAN-TRIEN-KHAI-nghien-cuu-thi-truong-khach-hang-1200x675.png 1200w, https:\/\/dtmconsulting.vn\/wp-content\/uploads\/2022\/10\/TU-VAN-va-HUONG-DAN-TRIEN-KHAI-nghien-cuu-thi-truong-khach-hang.png 1920w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 700px; --smush-placeholder-aspect-ratio: 700\/394;\" \/><\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c ch\u1ecdn m\u1eabu v\u00e0 x\u00e1c \u0111\u1ecbnh c\u1ee1 m\u1eabu l\u00e0 m\u1ed9t c\u00f4ng vi\u1ec7c quan tr\u1ecdng v\u00e0 c\u1ea7n thi\u1ebft trong nghi\u00ean c\u1ee9u marketing \u0111\u1ed1i v\u1edbi c\u1ea3 ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u \u0111\u1ecbnh t\u00ednh v\u00e0 \u0111\u1ecbnh l\u01b0\u1ee3ng. Nh\u01b0ng l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn m\u1eabu v\u00e0 x\u00e1c \u0111\u1ecbnh c\u1ee1 m\u1eabu ra sao cho h\u1ee3p l\u00fd l\u00e0 c\u00e2u h\u1ecfi m\u00e0 kh\u00f4ng [&hellip;]<\/p>","protected":false},"author":4,"featured_media":10945,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[74,128],"tags":[655,651],"class_list":["post-10891","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-chia-se-kien-thuc","tag-marketing-skill","tag-nghien-cuu-thi-truong-tag",""],"_links":{"self":[{"href":"https:\/\/dtmconsulting.vn\/en\/wp-json\/wp\/v2\/posts\/10891","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dtmconsulting.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dtmconsulting.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dtmconsulting.vn\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/dtmconsulting.vn\/en\/wp-json\/wp\/v2\/comments?post=10891"}],"version-history":[{"count":14,"href":"https:\/\/dtmconsulting.vn\/en\/wp-json\/wp\/v2\/posts\/10891\/revisions"}],"predecessor-version":[{"id":16861,"href":"https:\/\/dtmconsulting.vn\/en\/wp-json\/wp\/v2\/posts\/10891\/revisions\/16861"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dtmconsulting.vn\/en\/wp-json\/wp\/v2\/media\/10945"}],"wp:attachment":[{"href":"https:\/\/dtmconsulting.vn\/en\/wp-json\/wp\/v2\/media?parent=10891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dtmconsulting.vn\/en\/wp-json\/wp\/v2\/categories?post=10891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dtmconsulting.vn\/en\/wp-json\/wp\/v2\/tags?post=10891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}