{"id":29994,"date":"2023-12-07T08:51:31","date_gmt":"2023-12-07T08:51:31","guid":{"rendered":"https:\/\/masterskills.org\/blog\/duong-trung-binh-truot-luy-thua-dema-double-exponential-moving-average-la-gi-cong-thuc-tinh-dema.html"},"modified":"2023-12-23T06:11:13","modified_gmt":"2023-12-22T23:11:13","slug":"duong-trung-binh-truot-luy-thua-dema-double-exponential-moving-average-la-gi-cong-thuc-tinh-dema","status":"publish","type":"post","link":"https:\/\/masterskills.org\/blog\/duong-trung-binh-truot-luy-thua-dema-double-exponential-moving-average-la-gi-cong-thuc-tinh-dema.html","title":{"rendered":"\u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba DEMA (Double Exponential Moving Average) l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c t\u00ednh DEMA"},"content":{"rendered":"
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(\u1ea2nh minh h\u1ecda: Investopedia)<\/p>\n<\/figcaption><\/figure>\n

\u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba<\/font><\/h2>\n

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

\u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba<\/b> trong ti\u1ebfng Anh l\u00e0 Double Exponential Moving Average (DEMA).<\/b><\/p>\n

\u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba<\/b> l\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 k\u0129 thu\u1eadt \u0111\u01b0\u1ee3c Patrick Mulloy gi\u1edbi thi\u1ec7u trong b\u00e0i vi\u1ebft th\u00e1ng 1 n\u0103m 1994 c\u1ee7a \u00f4ng, “L\u00e0m m\u1ecbn d\u1eef li\u1ec7u v\u1edbi trung b\u00ecnh tr\u01b0\u1ee3t nhanh h\u01a1n” trong T\u1ea1p ch\u00ed Ph\u00e2n t\u00edch k\u0129 thu\u1eadt c\u1ee7a ch\u1ee9ng kho\u00e1n v\u00e0 h\u00e0ng h\u00f3a.<\/p>\n

\u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba s\u1eed d\u1ee5ng 2 \u0111\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t s\u1ed1 m\u0169\u00a0(EMAs) \u0111\u1ec3 l\u00e0m gi\u1ea3m \u0111\u1ed9 tr\u1ec5, v\u00ec m\u1ed9t s\u1ed1 nh\u00e0 giao d\u1ecbch xem \u0111\u1ed9 tr\u1ec5 l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1. \u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng theo c\u00e1ch t\u01b0\u01a1ng t\u1ef1 nh\u01b0\u00a0\u0111\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t\u00a0truy\u1ec1n th\u1ed1ng (MA).\u00a0<\/p>\n

\u0110\u01b0\u1eddng trung b\u00ecnh gi\u00fap x\u00e1c nh\u1eadn xu h\u01b0\u1edbng t\u0103ng khi gi\u00e1 cao h\u01a1n m\u1ee9c trung b\u00ecnh v\u00e0 gi\u00fap x\u00e1c nh\u1eadn xu h\u01b0\u1edbng gi\u1ea3m khi gi\u00e1 d\u01b0\u1edbi m\u1ee9c trung b\u00ecnh. Khi gi\u00e1 v\u01b0\u1ee3t qua m\u1ee9c trung b\u00ecnh c\u00f3 th\u1ec3 b\u00e1o hi\u1ec7u s\u1ef1 thay \u0111\u1ed5i xu h\u01b0\u1edbng. C\u00e1c \u0111\u01b0\u1eddng trung b\u00ecnh c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ec9 ra c\u00e1c ng\u01b0\u1ee1ng h\u1ed7 tr\u1ee3 ho\u1eb7c kh\u00e1ng c\u1ef1.<\/p>\n

C\u00f4ng th\u1ee9c t\u00ednh\u00a0<\/font>\u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba<\/font><\/h3>\n

DEMA =\u00a0 2 x EMA(n) \u2013 EMA c\u1ee7a EMA(n)\u00a0<\/p>\n

v\u1edbi n l\u00e0 chu k\u00ec nh\u00ecn l\u1ea1i (look-back period), l\u00e0 s\u1ed1 l\u01b0\u1ee3ng chu k\u00ec \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 t\u00ednh to\u00e1n ch\u1ec9 b\u00e1o.<\/p>\n

C\u00e1ch t\u00ednh DEMA<\/b><\/p>\n

1. Ch\u1ecdn b\u1ea5t k\u00ec m\u1ed9t chu k\u00ec nh\u00ecn l\u1ea1i n\u00e0o, ch\u1eb3ng h\u1ea1n nh\u01b0 5 chu k\u00ec, 15 chu k\u00ec ho\u1eb7c 100 chu k\u00ec.<\/p>\n

2. T\u00ednh EMA trong chu k\u00ec \u0111\u00f3, \u0111\u00e2y l\u00e0 EMA(n).<\/p>\n

3. \u00c1p d\u1ee5ng EMA v\u1edbi c\u00f9ng chu k\u00ec nh\u00ecn l\u1ea1i cho EMA(n). K\u1ebft qu\u1ea3 ra l\u00e0 m\u1ed9t EMA \u0111\u01b0\u1ee3c l\u00e0m m\u1ecbn.<\/p>\n

4. Nh\u00e2n hai l\u1ea7n EMA(n) v\u00e0 tr\u1eeb EMA \u0111\u01b0\u1ee3c l\u00e0m m\u1ecbn.<\/p>\n

\u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba cho b\u1ea1n bi\u1ebft \u0111i\u1ec1u g\u00ec?<\/font><\/h3>\n

\u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba ph\u1ea3n \u1ee9ng nhanh h\u01a1n so v\u1edbi \u0111\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t truy\u1ec1n th\u1ed1ng, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u b\u1edfi c\u00e1c\u00a0day traders\u00a0v\u00e0 swing traders (nh\u00e0 giao d\u1ecbch l\u01b0\u1edbt s\u00f3ng). C\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 d\u00e0i h\u1ea1n c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ch\u00fang. Nh\u01b0ng v\u00ec \u0111a s\u1ed1 nh\u00e0 \u0111\u1ea7u t\u01b0 d\u00e0i h\u1ea1n \u00edt thay \u0111\u1ed5i h\u01a1n trong t\u00e0i s\u1ea3n m\u00e0 h\u1ecd n\u1eafm gi\u1eef, n\u00ean MA truy\u1ec1n th\u1ed1ng c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t h\u01a1n.<\/p>\n

\u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n t\u00edch s\u1ee9c m\u1ea1nh c\u1ee7a m\u1ed9t xu h\u01b0\u1edbng t\u0103ng ho\u1eb7c xu h\u01b0\u1edbng gi\u1ea3m gi\u00e1.<\/p>\n

Ch\u1ee7 y\u1ebfu, c\u00e1c nh\u00e0 giao d\u1ecbch theo d\u00f5i gi\u00e1 li\u00ean quan \u0111\u1ebfn DEMA \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 xu h\u01b0\u1edbng v\u00e0 s\u1ee9c m\u1ea1nh c\u1ee7a xu h\u01b0\u1edbng. Khi gi\u00e1 cao h\u01a1n DEMA v\u00e0 DEMA \u0111ang t\u0103ng, n\u00f3 b\u00e1o hi\u1ec7u xu h\u01b0\u1edbng t\u0103ng. Khi gi\u00e1 th\u1ea5p h\u01a1n DEMA v\u00e0 DEMA \u0111ang gi\u1ea3m, \u0111i\u1ec1u \u0111\u00f3 b\u00e1o hi\u1ec7u xu h\u01b0\u1edbng gi\u1ea3m.<\/p>\n

D\u1ef1a v\u00e0o nh\u1eefng \u0111i\u1ec1u tr\u00ean, n\u1ebfu gi\u00e1 di chuy\u1ec3n t\u1eeb b\u00ean d\u01b0\u1edbi l\u00ean tr\u00ean DEMA c\u00f3 th\u1ec3 b\u00e1o hi\u1ec7u xu h\u01b0\u1edbng gi\u1ea3m \u0111\u00e3 k\u1ebft th\u00fac v\u00e0 gi\u00e1 b\u1eaft \u0111\u1ea7u t\u0103ng. N\u1ebfu gi\u00e1 gi\u1ea3m t\u1eeb tr\u00ean cao xu\u1ed1ng d\u01b0\u1edbi DEMA, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 b\u00e1o hi\u1ec7u xu h\u01b0\u1edbng t\u0103ng \u0111\u00e3 k\u1ebft th\u00fac v\u00e0 gi\u00e1 b\u1eaft \u0111\u1ea7u gi\u1ea3m.<\/p>\n

C\u00e1c nh\u00e0 giao d\u1ecbch c\u0169ng c\u00f3 th\u1ec3 c\u00f3 hai (ho\u1eb7c nhi\u1ec1u) DEMA v\u1edbi c\u00e1c chu k\u00ec nh\u00ecn l\u1ea1i kh\u00e1c nhau tr\u00ean bi\u1ec3u \u0111\u1ed3 c\u1ee7a h\u1ecd. T\u00edn hi\u1ec7u giao d\u1ecbch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o ra khi c\u00e1c \u0111\u01b0\u1eddng n\u00e0y \u0111i qua nhau.<\/p>\n

H\u1ea1n ch\u1ebf c\u1ee7a \u0111<\/font>\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba<\/font><\/h3>\n

\u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t c\u00f3 xu h\u01b0\u1edbng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong c\u00e1c th\u1ecb tr\u01b0\u1eddng xu h\u01b0\u1edbng, nh\u01b0ng cung c\u1ea5p \u00edt th\u00f4ng tin khi gi\u00e1 th\u1ecb tr\u01b0\u1eddng b\u1ea5p b\u00eanh ho\u1eb7c gi\u1edbi h\u1ea1n ph\u1ea1m vi. Trong nh\u1eefng th\u1eddi \u0111i\u1ec3m nh\u01b0 v\u1eady, gi\u00e1 s\u1ebd th\u01b0\u1eddng xuy\u00ean qua l\u1ea1i tr\u00ean MA ho\u1eb7c DEMA. C\u00e1c bi\u1ebfn \u0111\u1ed9ng gi\u00e1 ng\u1eafn h\u1ea1n \u00edt c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn \u0111\u1ebfn m\u1ed9t t\u00edn hi\u1ec7u giao d\u1ecbch c\u00f3 l\u1eddi.<\/p>\n

Gi\u1ea3m \u0111\u1ed9 tr\u1ec5 c\u00f3 th\u1ec3 c\u00f3 \u00edch trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, nh\u01b0 khi x\u1ea3y ra \u0111\u1ea3o ng\u01b0\u1ee3c gi\u00e1 th\u1ef1c t\u1ebf. Gi\u1ea3m \u0111\u1ed9 tr\u1ec5 gi\u00fap c\u00e1c giao d\u1ecbch ra quy\u1ebft \u0111\u1ecbnh nhanh h\u01a1n, gi\u1ea3m t\u1ed5n th\u1ea5t. Tuy nhi\u00ean, \u0111\u1ed9 tr\u1ec5 gi\u1ea3m c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn giao d\u1ecbch qu\u00e1 m\u1ee9c. \u0110\u00e2y l\u00e0 khi m\u1ed9t ch\u1ec9 b\u00e1o cung c\u1ea5p qu\u00e1 nhi\u1ec1u t\u00edn hi\u1ec7u.<\/p>\n

\u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u1ed1t nh\u1ea5t k\u1ebft h\u1ee3p v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch kh\u00e1c, ch\u1eb3ng h\u1ea1n nh\u01b0 ph\u00e2n t\u00edch\u00a0h\u00e0nh \u0111\u1ed9ng gi\u00e1,\u00a0ph\u00e2n t\u00edch c\u01a1 b\u1ea3n\u00a0v\u00e0 c\u00e1c\u00a0ch\u1ec9 b\u00e1o k\u0129 thu\u1eadt\u00a0kh\u00e1c.<\/p>\n

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

\n \u0110\u01b0\u1eddng trung b\u00ecnh tr\u01b0\u1ee3t l\u0169y th\u1eeba (ti\u1ebfng Anh: Double Exponential Moving Average) l\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 k\u0129 thu\u1eadt \u0111\u01b0\u1ee3c Patrick Mulloy gi\u1edbi thi\u1ec7u trong b\u00e0i vi\u1ebft th\u00e1ng 1 n\u0103m 1994 c\u1ee7a \u00f4ng.\n <\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[417],"tags":[],"_links":{"self":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/29994"}],"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=29994"}],"version-history":[{"count":0,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/29994\/revisions"}],"wp:attachment":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/media?parent=29994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/categories?post=29994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/tags?post=29994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}