{"id":25991,"date":"2023-12-07T02:18:54","date_gmt":"2023-12-07T02:18:54","guid":{"rendered":"https:\/\/masterskills.org\/blog\/chon-mau-ca-khoi-cluster-sampling-trong-thong-ke-la-gi.html"},"modified":"2023-12-22T11:24:21","modified_gmt":"2023-12-22T04:24:21","slug":"chon-mau-ca-khoi-cluster-sampling-trong-thong-ke-la-gi","status":"publish","type":"post","link":"https:\/\/masterskills.org\/blog\/chon-mau-ca-khoi-cluster-sampling-trong-thong-ke-la-gi.html","title":{"rendered":"Ch\u1ecdn m\u1eabu c\u1ea3 kh\u1ed1i (Cluster sampling) trong th\u1ed1ng k\u00ea l\u00e0 g\u00ec?"},"content":{"rendered":"
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\"Cluster-sampling-2\"<\/div>\n
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H\u00ecnh minh h\u1ecda. Ngu\u1ed3n: questionpro.com<\/p>\n<\/div>\n<\/div>\n

Ch\u1ecdn m\u1eabu c\u1ea3 kh\u1ed1i<\/font><\/h2>\n

Kh\u00e1i ni\u1ec7m<\/b><\/p>\n

Ch\u1ecdn m\u1eabu c\u1ea3 kh\u1ed1i<\/b> trong ti\u1ebfng Anh l\u00e0\u00a0cluster sampling<\/b>.<\/p>\n

Ch\u1ecdn m\u1eabu c\u1ea3 kh\u1ed1i<\/i> (m\u1eabu ch\u00f9m)<\/i> l\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u1ed5 ch\u1ee9c ch\u1ecdn m\u1eabu, trong \u0111\u00f3 s\u1ed1 \u0111\u01a1n v\u1ecb m\u1eabu \u0111\u01b0\u1ee3c ch\u1ecdn kh\u00f4ng ph\u1ea3i l\u00e0 \u0111\u01a1n l\u1ebb m\u00e0 c\u00f9ng m\u1ed9t l\u00fac ch\u1ecdn ra m\u1ed9t kh\u1ed1i \u0111\u01a1n v\u1ecb.\u00a0<\/p>\n

Ti\u1ebfn h\u00e0nh ch\u1ecdn m\u1eabu c\u1ea3 kh\u1ed1i<\/font><\/h3>\n

Trong ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, tr\u01b0\u1edbc h\u1ebft t\u1ed5ng th\u1ec3 chung \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c kh\u1ed1i (nh\u01b0 l\u00e0ng, x\u00e3, ph\u01b0\u1eddng, l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m s\u1ea3n xu\u1ea5t trong 1 kho\u1ea3ng th\u1eddi gian\u2026). Sau \u0111\u00f3, ta ch\u1ecdn ng\u1eabu nhi\u00ean m\u1ed9t s\u1ed1 kh\u1ed1i v\u00e0 \u0111i\u1ec1u tra t\u1ea5t c\u1ea3 c\u00e1c \u0111\u01a1n v\u1ecb trong kh\u1ed1i \u0111\u00e3 ch\u1ecdn.\u00a0<\/p>\n

Th\u01b0\u1eddng d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y khi kh\u00f4ng c\u00f3 s\u1eb5n danh s\u00e1ch \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a c\u00e1c \u0111\u01a1n v\u1ecb trong t\u1ed5ng th\u1ec3 c\u1ea7n nghi\u00ean c\u1ee9u. Ch\u1eb3ng h\u1ea1n \u0111i\u1ec1u tra t\u00ecnh h\u00ecnh h\u1ecdc t\u00edn ch\u1ec9 c\u1ee7a sinh vi\u00ean, t\u1ed5ng th\u1ec3 sinh vi\u00ean \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp th\u00e0nh c\u00e1c l\u1edbp t\u00edn ch\u1ec9 ch\u1ee9 kh\u00f4ng l\u1eadp danh s\u00e1ch sinh vi\u00ean v\u00e0 c\u00f3 th\u1ec3 ch\u1ecdn ng\u1eabu nhi\u00ean m\u1ed9t s\u1ed1 l\u1edbp \u0111\u1ec3 \u0111i\u1ec1u tra to\u00e0n b\u1ed9.\u00a0<\/p>\n

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Ngu\u1ed3n: Netquest<\/p>\n<\/div>\n<\/div>\n

V\u00ed d\u1ee5: Ch\u1ecdn m\u1eabu \u0111i\u1ec1u tra c\u00e1 nh\u00e2n h\u1ed9 gia \u0111\u00ecnh<\/p>\n

B\u01b0\u1edbc 1: l\u1ef1a ch\u1ecdn ng\u1eabu nhi\u00ean m\u1ed9t s\u1ed1 huy\u1ec7n.<\/p>\n

B\u01b0\u1edbc 2: c\u00e1c h\u1ed9 gia \u0111\u00ecnh \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn trong c\u00e1c huy\u1ec7n v\u1eeba \u0111\u01b0\u1ee3c ch\u1ecdn.<\/p>\n

B\u01b0\u1edbc 3: T\u1ea5t c\u1ea3 c\u00e1 nh\u00e2n t\u1eeb h\u1ed9 \u0111\u01b0\u1ee3c ch\u1ecdn.<\/p>\n

\u01afu, nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu c\u1ea3 kh\u1ed1i<\/span><\/h3>\n

Ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu n\u00e0y c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 t\u1ed5 ch\u1ee9c g\u1ecdn nh\u1eb9, gi\u1ea3m \u0111\u01b0\u1ee3c chi ph\u00ed nh\u01b0ng n\u1ebfu s\u1ed1 \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c ch\u1ecdn ch\u1ec9 t\u1eadp trung v\u00e0o m\u1ed9t s\u1ed1 kh\u1ed1i th\u00ec c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn sai s\u1ed1 l\u1edbn khi gi\u1eefa c\u00e1c kh\u1ed1i c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t nhau nhi\u1ec1u.\u00a0C\u00e1ch ch\u1ecdn n\u00e0y th\u01b0\u1eddng \u00e1p d\u1ee5ng trong \u0111i\u1ec1u tra ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m m\u00e0 khi s\u1ea3n xu\u1ea5t xong, s\u1ea3n ph\u1ea9m \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u00f3ng ki\u1ec7n.<\/p>\n

Ch\u1ecdn m\u1eabu c\u1ea3 kh\u1ed1i kh\u00f4ng x\u00e1c \u0111\u1ecbnh s\u1ed1 ph\u1ea7n t\u1eed m\u1eabu c\u1ea7n l\u1ea5y l\u00e0 bao nhi\u00eau. M\u1ee9c \u0111\u1ed9 \u0111\u1ea1i bi\u1ec3u c\u1ee7a c\u00e1c \u0111\u01a1n v\u1ecb m\u1eabu \u0111\u01b0\u1ee3c ch\u1ecdn trong ph\u01b0\u01a1ng ph\u00e1p n\u00e0y th\u01b0\u1eddng kh\u00f4ng cao b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn m\u1eabu kh\u00e1c. Do \u0111\u00f3 ch\u1ec9 n\u00ean \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y trong tr\u01b0\u1eddng h\u1ee3p gi\u1eefa c\u00e1c \u0111\u01a1n v\u1ecb trong m\u1ed9t kh\u1ed1i c\u00f3 s\u1ef1 kh\u00e1c nhau \u0111\u00e1ng k\u1ec3 song gi\u1eefa c\u00e1c kh\u1ed1i l\u1ea1i gi\u1ed1ng nhau v\u1ec1 b\u1ea3n ch\u1ea5t.<\/p>\n

(Theo Gi\u00e1o tr\u00ecnh Th\u1ed1ng k\u00ea doanh nghi\u1ec7p, NXB \u0110\u1ea1i h\u1ecdc Kinh t\u1ebf qu\u1ed1c d\u00e2n<\/i>)<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

\n Ch\u1ecdn m\u1eabu c\u1ea3 kh\u1ed1i (ti\u1ebfng Anh: Cluster sampling) l\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u1ed5 ch\u1ee9c ch\u1ecdn m\u1eabu, trong \u0111\u00f3 s\u1ed1 \u0111\u01a1n v\u1ecb m\u1eabu \u0111\u01b0\u1ee3c ch\u1ecdn kh\u00f4ng ph\u1ea3i l\u00e0 \u0111\u01a1n l\u1ebb m\u00e0 c\u00f9ng m\u1ed9t l\u00fac ch\u1ecdn ra m\u1ed9t kh\u1ed1i \u0111\u01a1n v\u1ecb.\n <\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[414],"tags":[],"_links":{"self":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/25991"}],"collection":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/comments?post=25991"}],"version-history":[{"count":0,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/25991\/revisions"}],"wp:attachment":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/media?parent=25991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/categories?post=25991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/tags?post=25991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}