{"id":23799,"date":"2023-12-06T08:54:35","date_gmt":"2023-12-06T08:54:35","guid":{"rendered":"https:\/\/masterskills.org\/blog\/rui-ro-thien-lech-ke-song-sot-survivorship-bias-risk-la-gi-dac-diem-va-cac-rui-ro-khac.html"},"modified":"2023-12-22T09:04:32","modified_gmt":"2023-12-22T02:04:32","slug":"rui-ro-thien-lech-ke-song-sot-survivorship-bias-risk-la-gi-dac-diem-va-cac-rui-ro-khac","status":"publish","type":"post","link":"https:\/\/masterskills.org\/blog\/rui-ro-thien-lech-ke-song-sot-survivorship-bias-risk-la-gi-dac-diem-va-cac-rui-ro-khac.html","title":{"rendered":"R\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t (Survivorship Bias Risk) l\u00e0 g\u00ec? \u0110\u1eb7c \u0111i\u1ec3m v\u00e0 c\u00e1c r\u1ee7i ro kh\u00e1c"},"content":{"rendered":"
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<\/div>
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(\u1ea2nh minh h\u1ecda: Pinnacle)<\/p>\n<\/figcaption><\/figure>\n

R\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t<\/font><\/h2>\n

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

R\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t<\/span><\/b> trong ti\u1ebfng Anh l\u00e0 Survivorship Bias Risk.<\/b><\/p>\n

R\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t<\/span><\/b> l\u00e0 kh\u1ea3 n\u0103ng m\u00e0 m\u1ed9t nh\u00e0 \u0111\u1ea7u t\u01b0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 sai l\u1ea7m d\u1ef1a tr\u00ean d\u1eef li\u1ec7u ho\u00e0n v\u1ed1n \u0111\u01b0\u1ee3c c\u00f4ng khai c\u1ee7a qu\u0129 \u0111\u1ea7u t\u01b0.<\/p>\n

\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a R\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t<\/span><\/font><\/h3>\n

R\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t<\/span> <\/b>l\u00e0 m\u1ed9t lo\u1ea1i r\u1ee7i ro d\u1ef1a tr\u00ean kh\u00e1i ni\u1ec7m thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t<\/span>. \u0110\u00e2y l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng c\u00f3 th\u1ec3 x\u1ea3y ra trong m\u1ed9t lo\u1ea1t c\u00e1c b\u1ed1i c\u1ea3nh.<\/p>\n

R\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t<\/span> li\u00ean quan \u0111\u1ebfn vi\u1ec7c \u0111\u00e1nh gi\u00e1 m\u1ed9t t\u00ecnh hu\u1ed1ng ho\u1eb7c \u0111\u01b0a ra k\u1ebft lu\u1eadn ch\u1ec9 d\u1ef1a v\u00e0o duy nh\u1ea5t nh\u1eefng ng\u01b0\u1eddi ho\u1eb7c nh\u1eefng th\u1ee9 n\u1ed5i b\u1eadt ho\u1eb7c c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y t\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111\u00f3.<\/p>\n

\u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra l\u00e0 sau khi m\u1ed9t qu\u00e1 tr\u00ecnh l\u1ef1a ch\u1ecdn ho\u1eb7c qu\u00e1 tr\u00ecnh t\u00e1ch l\u1ecdc \u0111\u00e3 di\u1ec5n ra.<\/p>\n

Trong b\u1ed1i c\u1ea3nh \u0111\u1ea7u t\u01b0, r\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t<\/span> c\u00f3 th\u1ec3 x\u1ea3y ra khi d\u1eef li\u1ec7u ho\u00e0n v\u1ed1n c\u1ee7a qu\u0129 \u0111\u1ea7u t\u01b0 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 cao h\u01a1n m\u1ed9t c\u00e1ch phi th\u1ef1c t\u1ebf, nh\u01b0ng c\u00e1c qu\u0129 ho\u1ea1t \u0111\u1ed9ng k\u00e9m c\u1ee7a c\u00f4ng ty l\u1ea1i b\u1ecb \u0111\u00f3ng c\u1eeda v\u00e0 l\u1ee3i nhu\u1eadn c\u1ee7a h\u1ecd kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o d\u1eef li\u1ec7u.<\/p>\n

Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, d\u1eef li\u1ec7u li\u00ean quan c\u1ee5 th\u1ec3 \u0111\u1ebfn c\u00e1c qu\u0129 \u0111\u00f3 \u0111\u00e3 b\u1ecb lo\u1ea1i b\u1ecf, t\u1ea1o ra m\u1ed9t b\u1ee9c tranh kh\u00f4ng ch\u00ednh x\u00e1c v\u00e0 kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 hi\u1ec7u su\u1ea5t qu\u0129 chung c\u1ee7a c\u00f4ng ty.<\/p>\n

Nh\u1eefng r\u1ee7i ro nguy hi\u1ec3m trong k\u1ecbch b\u1ea3n n\u00e0y ch\u00ednh l\u00e0 nh\u00e0 \u0111\u1ea7u t\u01b0 s\u1ebd kh\u00f4ng th\u1ef1c s\u1ef1 nh\u00ecn th\u1ea5y l\u1ee3i nhu\u1eadn m\u00e0 h\u1ecd d\u1ef1 \u0111o\u00e1n b\u1edfi v\u00ec h\u1ecd \u0111\u00e3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 c\u1ee7a h\u1ecd d\u1ef1a tr\u00ean th\u00f4ng tin kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 v\u00e0 sai l\u1ec7ch.<\/p>\n

R\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t<\/span> v\u00e0 c\u00e1c r\u1ee7i ro kh\u00e1c<\/font><\/h3>\n

R\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t<\/span><\/b> l\u00e0 m\u1ed9t trong nhi\u1ec1u l\u00ed do t\u1ea1i sao c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 kh\u00f4ng n\u00ean ph\u1ee5 thu\u1ed9c qu\u00e1 nhi\u1ec1u v\u00e0o l\u1ee3i nhu\u1eadn trong qu\u00e1 kh\u1ee9 \u0111\u1ec3 \u0111\u01b0a ra\u00a0quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0\u00a0c\u1ee7a h\u1ecd.<\/p>\n

\u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t \u0111\u00fang n\u1ebfu c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 \u0111ang xem x\u00e9t c\u1ed5 phi\u1ebfu trong th\u1eddi gian r\u1ea5t ng\u1eafn trong l\u1ecbch s\u1eed giao d\u1ecbch c\u1ee7a qu\u0129, b\u1edfi v\u00ec c\u00f3 th\u1ec3 \u0111\u00e3 x\u1ea3y ra m\u1ed9t s\u1ed1 s\u1ef1 c\u1ed1 b\u1ea5t th\u01b0\u1eddng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a qu\u0129 trong th\u1eddi gian \u0111\u00f3.<\/p>\n

C\u0169ng c\u00f3 kh\u1ea3 n\u0103ng m\u1ed9t nh\u00f3m c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 t\u00ecnh c\u1edd g\u1eb7p may m\u1eafn v\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, v\u00e0 t\u1ea5t nhi\u00ean kh\u00f4ng c\u00f3 g\u00ec \u0111\u1ea3m b\u1ea3o r\u1eb1ng may m\u1eafn \u0111\u00f3 s\u1ebd l\u1eb7p l\u1ea1i trong t\u01b0\u01a1ng lai.<\/p>\n

R\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t<\/span> ch\u1ec9 l\u00e0 m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 c\u00e1c lo\u1ea1i r\u1ee7i ro kh\u00e1c nhau m\u00e0 nh\u00e0 \u0111\u1ea7u t\u01b0 ph\u1ea3i xem x\u00e9t khi \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 ho\u1eb7c ho\u1ea1ch \u0111\u1ecbnh chi\u1ebfn l\u01b0\u1ee3c d\u00e0i h\u1ea1n c\u1ee7a h\u1ecd.<\/p>\n

C\u00e1c lo\u1ea1i r\u1ee7i ro kh\u00e1c m\u00e0 c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i l\u00e0:<\/b><\/i><\/p>\n

– R\u1ee7i ro thi\u00ean ki\u1ebfn kh\u00f4ng b\u00e1o c\u00e1o (<\/b>Non-reporting bias risk):\u00a0<\/b>l\u00e0 s\u1ef1 r\u1ee7i ro khi l\u1ee3i nhu\u1eadn chung b\u1ecb sai l\u1ec7ch v\u00ec m\u1ed9t s\u1ed1 qu\u0129, c\u00f3 th\u1ec3 l\u00e0 nh\u1eefng qu\u0129 ho\u1ea1t \u0111\u1ed9ng k\u00e9m, t\u1eeb ch\u1ed1i b\u00e1o c\u00e1o l\u1ee3i nhu\u1eadn c\u1ee7a h\u1ecd.<\/p>\n

– R\u1ee7i ro thi\u00ean ki\u1ebfn t\u1ea1o l\u1ecbch s\u1eed ngay l\u1eadp t\u1ee9c (<\/b>Instant history bias risk): l\u00e0 kh\u1ea3 n\u0103ng c\u00e1c nh\u00e0 qu\u1ea3n l\u00ed qu\u0129 ch\u1ec9 ch\u1ecdn b\u00e1o c\u00e1o hi\u1ec7u su\u1ea5t c\u00f4ng khai khi h\u1ecd \u0111\u00e3 thi\u1ebft l\u1eadp m\u1ed9t h\u1ed3 s\u01a1 th\u00e0nh c\u00f4ng cho m\u1ed9t qu\u0129, trong khi lo\u1ea1i b\u1ecf c\u00e1c qu\u0129 kh\u00e1c kh\u00f4ng th\u00e0nh c\u00f4ng.<\/p>\n

Ngo\u00e0i hi\u1ec7u su\u1ea5t trong qu\u00e1 kh\u1ee9, nh\u00e0 \u0111\u1ea7u t\u01b0 n\u00ean xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 chi ph\u00ed, r\u1ee7i ro, l\u1ee3i nhu\u1eadn sau thu\u1ebf, c\u00e1c bi\u1ebfn \u0111\u1ed9ng, m\u1ed1i quan h\u1ec7 v\u1edbi hi\u1ec7u su\u1ea5t chu\u1ea9n,\u2026 \u0111\u1ec3 \u0111\u01b0a ra c\u00e1c quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 \u0111\u00fang \u0111\u1eafn.<\/p>\n

(Theo Investopedia<\/i>)<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

\n R\u1ee7i ro thi\u00ean l\u1ec7ch k\u1ebb s\u1ed1ng s\u00f3t (ti\u1ebfng Anh: Survivorship Bias Risk) l\u00e0 kh\u1ea3 n\u0103ng m\u00e0 m\u1ed9t nh\u00e0 \u0111\u1ea7u t\u01b0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 sai l\u1ea7m d\u1ef1a tr\u00ean d\u1eef li\u1ec7u ho\u00e0n v\u1ed1n \u0111\u01b0\u1ee3c c\u00f4ng khai c\u1ee7a qu\u0129 \u0111\u1ea7u t\u01b0.\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\/23799"}],"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=23799"}],"version-history":[{"count":0,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/23799\/revisions"}],"wp:attachment":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/media?parent=23799"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/categories?post=23799"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/tags?post=23799"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}