{"id":25265,"date":"2023-12-07T00:18:48","date_gmt":"2023-12-07T00:18:48","guid":{"rendered":"https:\/\/masterskills.org\/blog\/ham-mat-do-xac-suat-probability-density-function-pdf-la-gi-ung-dung-trong-dau-tu-chung-khoan.html"},"modified":"2023-12-22T10:16:56","modified_gmt":"2023-12-22T03:16:56","slug":"ham-mat-do-xac-suat-probability-density-function-pdf-la-gi-ung-dung-trong-dau-tu-chung-khoan","status":"publish","type":"post","link":"https:\/\/masterskills.org\/blog\/ham-mat-do-xac-suat-probability-density-function-pdf-la-gi-ung-dung-trong-dau-tu-chung-khoan.html","title":{"rendered":"H\u00e0m m\u1eadt \u0111\u1ed9 x\u00e1c su\u1ea5t (Probability Density Function &#8211; PDF) l\u00e0 g\u00ec? \u1ee8ng d\u1ee5ng trong \u0111\u1ea7u t\u01b0 ch\u1ee9ng kho\u00e1n"},"content":{"rendered":"<div class=\"vnbcbc-body vceditor-content wi-active\" data-role=\"content\">\n<figure class=\"VCSortableInPreviewMode\" type=\"Photo\" style=\"\">\n<div><\/div><figcaption class=\"PhotoCMS_Caption\">\n<p data-placeholder=\"[Nh\u1eadp ch\u00fa th\u00edch \u1ea3nh]\">Hi\u0300nh minh ho\u0323a. Ngu\u00f4\u0300n: Nanohub.org<\/p>\n<\/figcaption><\/figure>\n<h2><font style=\"line-height: 22px; font-size: 22px;\" color=\"#3d85c6\">H\u00e0m m\u1eadt \u0111\u1ed9 x\u00e1c su\u1ea5t<\/font><\/h2>\n<p><b>Kha\u0301i ni\u00ea\u0323m<\/b><\/p>\n<p><b>H\u00e0m m\u1eadt \u0111\u1ed9 x\u00e1c su\u1ea5t<\/b> trong ti\u00ea\u0301ng Anh la\u0300 <b>Probability Density Function<\/b>, vi\u1ebft t\u1eaft l\u00e0<b>\u00a0PDF.<\/b><\/p>\n<p><b>H\u00e0m m\u1eadt \u0111\u1ed9 x\u00e1c su\u1ea5t (PDF)<\/b> l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng bi\u1ec3u di\u1ec5n trong th\u1ed1ng k\u00ea x\u00e1c \u0111\u1ecbnh ph\u00e2n ph\u1ed1i x\u00e1c su\u1ea5t (kh\u1ea3 n\u0103ng x\u1ea3y ra m\u1ed9t k\u1ebft qu\u1ea3) cho m\u1ed9t bi\u1ebfn ng\u1eabu nhi\u00ean r\u1eddi r\u1ea1c (v\u00ed d\u1ee5: c\u1ed5 phi\u1ebfu ho\u1eb7c c\u00e1c qu\u0129 ETF).\u00a0<\/p>\n<p><i>Bi\u1ebfn ng\u1eabu nhi\u00ean r\u1eddi r\u1ea1c tr\u00e1i ng\u01b0\u1ee3c v\u1edbi bi\u1ebfn ng\u1eabu nhi\u00ean li\u00ean t\u1ee5c.\u00a0<\/i><\/p>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t c\u1ee7a bi\u1ebfn ng\u1eabu nhi\u00ean r\u1eddi r\u1ea1c l\u00e0 n\u00f3 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb ch\u00ednh x\u00e1c.   V\u00ed d\u1ee5 c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a gi\u00e1 c\u1ed5 phi\u1ebfu ch\u1ec9 l\u00ean \u0111\u1ebfn s\u1ed1 th\u1eadp ph\u00e2n th\u1ee9 hai (v\u00ed d\u1ee5: 52,55 \u0111\u00f4 la) trong khi bi\u1ebfn li\u00ean t\u1ee5c c\u00f3 s\u1ed1 l\u01b0\u1ee3ng s\u1ed1 th\u1eadp ph\u00e2n k\u00e9o d\u00e0i v\u00f4 h\u1ea1n (v\u00ed d\u1ee5: 52,5572389658).\u00a0 \u00a0 \u00a0 \u00a0<\/p>\n<p>Khi PDF \u0111\u01b0\u1ee3c v\u1ebd tr\u00ean bi\u1ec3u \u0111\u1ed3, khu v\u1ef1c d\u01b0\u1edbi \u0111\u01b0\u1eddng cong PDF s\u1ebd v\u00f9ng m\u00e0 gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ebfn gi\u1ea3m.   Di\u1ec7n t\u00edch v\u00f9ng ph\u00eda trong \u0111\u01b0\u1eddng PDF b\u1eb1ng v\u1edbi x\u00e1c su\u1ea5t m\u1ed9t bi\u1ebfn ng\u1eabu nhi\u00ean r\u1eddi r\u1ea1c x\u1ea3y ra.\u00a0<\/p>\n<p>C\u1ee5 th\u1ec3 h\u01a1n, kh\u1ea3 n\u0103ng x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a m\u1ed9t bi\u1ebfn ng\u1eabu nhi\u00ean li\u00ean t\u1ee5c l\u00e0 0 do n\u00f3 l\u00e0 t\u1eadp h\u1ee3p v\u00f4 h\u1ea1n c\u00e1c gi\u00e1 tr\u1ecb c\u00f3 th\u1ec3 c\u00f3, n\u00ean ch\u1ee9c n\u0103ng c\u1ee7a \u0111\u01b0\u1eddng PDF l\u00e0 x\u00e1c \u0111\u1ecbnh m\u1ed9t ph\u1ea1m vi c\u1ee5 th\u1ec3 c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a m\u1ed9t bi\u1ebfn ng\u1eabu nhi\u00ean c\u00f3 th\u1ec3 c\u00f3.\u00a0<\/p>\n<h3><font style=\"line-height: 22px; font-size: 22px;\" color=\"#3d85c6\">H\u00e0m m\u1eadt \u0111\u1ed9 x\u00e1c su\u1ea5t trong \u0111\u1ea7u t\u01b0<\/font><\/h3>\n<p>\u0110\u01b0\u1eddng <b>PDF<\/b> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 r\u1ee7i ro c\u1ee7a m\u1ed9t ch\u1ee9ng kho\u00e1n c\u1ee5 th\u1ec3, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed9t c\u1ed5 phi\u1ebfu ri\u00eang l\u1ebb ho\u1eb7c qu\u0129 ho\u00e1n \u0111\u1ed5i danh m\u1ee5c (ETF).<\/p>\n<p>\u0110\u01b0\u1eddng PDF th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n tr\u00ean bi\u1ec3u \u0111\u1ed3 theo d\u1ea1ng \u0111\u01b0\u1eddng cong h\u00ecnh chu\u00f4ng. \u0110\u1ec9nh chu\u00f4ng bi\u1ec3u th\u1ecb th\u1ecb tr\u01b0\u1eddng \u0111ang trung l\u1eadp v\u1edbi r\u1ee7i ro, hai \u0111u\u00f4i c\u1ee7a chu\u00f4ng cho bi\u1ebft r\u1ee7i ro hay ph\u1ea7n th\u01b0\u1edfng t\u0103ng l\u00ean ho\u1eb7c gi\u1ea3m xu\u1ed1ng.\u00a0<\/p>\n<figure class=\"VCSortableInPreviewMode\" type=\"Photo\" style=\"\">\n<div><\/div><figcaption class=\"PhotoCMS_Caption\">\n<p data-placeholder=\"[Nh\u1eadp ch\u00fa th\u00edch \u1ea3nh]\">Hi\u0300nh minh ho\u0323a. Ngu\u00f4\u0300n: Mdpi.com<\/p>\n<\/figcaption><\/figure>\n<p>&#8211; N\u1ebfu nh\u01b0 h\u00ecnh chu\u00f4ng l\u1ec7ch qua ph\u00eda b\u00ean ph\u1ea3i c\u1ee7a \u0111\u01b0\u1eddng cong PDF, cho th\u1ea5y th\u1ecb tr\u01b0\u1eddng \u0111ang c\u00f3 ph\u1ea7n th\u01b0\u1edfng v\u00e0 r\u1ee7i ro l\u1edbn h\u01a1n.\u00a0<\/p>\n<p>&#8211; Ng\u01b0\u1ee3c l\u1ea1i, h\u00ecnh chu\u00f4ng l\u1ec7ch qua ph\u00eda b\u00ean tr\u00e1i c\u1ee7a \u0111\u01b0\u1eddng cong bi\u1ec3u th\u1ecb ph\u1ea7n th\u01b0\u1edfng v\u00e0 r\u1ee7i ro th\u1ea5p h\u01a1n.<\/p>\n<p><i>C\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 n\u00ean s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng PDF k\u1ebft h\u1ee3p v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 kh\u00e1c \u0111\u1ec3 t\u00ednh to\u00e1n r\u1ee7i ro v\u00e0 ph\u1ea7n th\u01b0\u1edfng t\u1ed5ng th\u1ec3 c\u1ee7a danh m\u1ee5c \u0111\u1ea7u t\u01b0 c\u1ee7a h\u1ecd.  \u00a0\u00a0<\/i><\/p>\n<h3><font style=\"line-height: 22px; font-size: 22px;\" color=\"#3d85c6\">H\u00e0m m\u1eadt \u0111\u1ed9 x\u00e1c su\u1ea5t v\u00e0 M\u1ee9c ch\u1ecbu r\u1ee7i ro c\u1ee7a c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0\u00a0<\/font><\/h3>\n<p><b>H\u00e0m m\u1eadt \u0111\u1ed9 x\u00e1c su\u1ea5t (PDF)<\/b> l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 tr\u1ef1c quan \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n tr\u00ean bi\u1ec3u \u0111\u1ed3 d\u1ef1a tr\u00ean d\u1eef li\u1ec7u trong l\u1ecbch s\u1eed.<\/p>\n<p><i>Trong \u0111\u1ea7u t\u01b0 ch\u1ee9ng kho\u00e1n, \u0111\u01b0\u1eddng PDF trung l\u1eadp l\u00e0 d\u1ea1ng ph\u1ed5 bi\u1ebfn nh\u1ea5t, c\u00f3 r\u1ee7i ro t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi ph\u1ea7n l\u1ee3i nhu\u1eadn.<\/i><\/p>\n<p><i>&#8211;\u00a0<\/i>M\u1ed9t nh\u00e0 \u0111\u1ea7u t\u01b0 ch\u1ec9 s\u1eb5n s\u00e0ng ch\u1ea5p nh\u1eadn m\u1ed9t m\u1ee9c r\u1ee7i ro h\u1ea1n ch\u1ebf s\u1ebd y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng sinh l\u1ee3i \u00edt h\u01a1n v\u00e0 s\u1ebd n\u1eb1m \u1edf ph\u00eda b\u00ean tr\u00e1i \u0111\u01b0\u1eddng cong h\u00ecnh chu\u00f4ng PDF.\u00a0<\/p>\n<p>&#8211; M\u1ed9t nh\u00e0 \u0111\u1ea7u t\u01b0 s\u1eb5n s\u00e0ng ch\u1ea5p nh\u1eadn r\u1ee7i ro cao h\u01a1n \u0111\u1ec3 thu \u0111\u01b0\u1ee3c ph\u1ea7n l\u1ee3i nhu\u1eadn cao h\u01a1n s\u1ebd n\u1eb1m \u1edf ph\u00eda b\u00ean ph\u1ea3i c\u1ee7a \u0111\u01b0\u1eddng cong h\u00ecnh chu\u00f4ng.\u00a0<\/p>\n<p><i>H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 t\u00ecm ki\u1ebfm m\u1ee9c l\u1ee3i nhu\u1eadn trung b\u00ecnh v\u00e0 duy tr\u00ec m\u1ee9c r\u1ee7i ro trung b\u00ecnh \u1edf ngay ch\u00ednh gi\u1eefa \u0111\u01b0\u1eddng cong h\u00ecnh chu\u00f4ng.\u00a0 \u00a0<\/i><\/p>\n<p>(Theo <i>Investopedia<\/i>)<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"vnbcbc-sapo\" data-role=\"sapo\">\n                            H\u00e0m m\u1eadt \u0111\u1ed9 x\u00e1c su\u1ea5t (ti\u1ebfng Anh: Probability Density Function, vi\u1ebft t\u1eaft: PDF) l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng bi\u1ec3u di\u1ec5n trong th\u1ed1ng k\u00ea x\u00e1c \u0111\u1ecbnh ph\u00e2n ph\u1ed1i x\u00e1c su\u1ea5t (kh\u1ea3 n\u0103ng x\u1ea3y ra m\u1ed9t k\u1ebft qu\u1ea3) cho m\u1ed9t bi\u1ebfn ng\u1eabu nhi\u00ean r\u1eddi r\u1ea1c.\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\/25265"}],"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=25265"}],"version-history":[{"count":0,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/25265\/revisions"}],"wp:attachment":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/media?parent=25265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/categories?post=25265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/tags?post=25265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}