{"id":27087,"date":"2023-12-07T03:19:06","date_gmt":"2023-12-07T03:19:06","guid":{"rendered":"https:\/\/masterskills.org\/blog\/xu-huong-tiet-kiem-can-bien-marginal-propensity-to-save-mps-la-gi.html"},"modified":"2023-12-22T14:52:18","modified_gmt":"2023-12-22T07:52:18","slug":"xu-huong-tiet-kiem-can-bien-marginal-propensity-to-save-mps-la-gi","status":"publish","type":"post","link":"https:\/\/masterskills.org\/blog\/xu-huong-tiet-kiem-can-bien-marginal-propensity-to-save-mps-la-gi.html","title":{"rendered":"Xu h\u01b0\u1edbng ti\u1ebft ki\u1ec7m c\u1eadn bi\u00ean (Marginal Propensity to Save – MPS) l\u00e0 g\u00ec?"},"content":{"rendered":"
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H\u00ecnh minh h\u1ecda. Ngu\u1ed3n: Investopedia<\/p>\n<\/div>\n<\/div>\n

Xu h\u01b0\u1edbng ti\u1ebft ki\u1ec7m c\u1eadn bi\u00ean\u00a0(MPS) <\/font><\/h2>\n

\u0110\u1ecbnh ngh\u0129a<\/b><\/p>\n

Xu h\u01b0\u1edbng ti\u1ebft ki\u1ec7m c\u1eadn bi\u00ean<\/b>\u00a0trong ti\u1ebfng Anh g\u1ecdi l\u00e0\u00a0Marginal Propensity to Save<\/b>, vi\u1ebft t\u1eaft l\u00e0\u00a0MPS<\/b>. Xu h\u01b0\u1edbng ti\u1ebft ki\u1ec7m c\u1eadn bi\u00ean<\/i> l\u00e0 l\u01b0\u1ee3ng ti\u1ebft ki\u1ec7m t\u0103ng th\u00eam khi thu nh\u1eadp kh\u1ea3 d\u1ee5ng t\u0103ng th\u00eam m\u1ed9t \u0111\u01a1n v\u1ecb.<\/p>\n

C\u00e1c thu\u1eadt ng\u1eef li\u00ean quan<\/font><\/h3>\n

Ti\u1ebft ki\u1ec7m<\/b>\u00a0\u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 ph\u1ea7n v\u01b0\u1ee3t qu\u00e1 thu nh\u1eadp so v\u1edbi chi ti\u00eau ti\u00eau d\u00f9ng.<\/p>\n

H\u00e0m ti\u1ebft ki\u1ec7m<\/b> (Saving Function) ph\u1ea3n \u00e1nh s\u1ef1 ph\u1ee5 thu\u1ed9c c\u1ee7a l\u01b0\u1ee3ng ti\u1ebft ki\u1ec7m d\u1ef1 ki\u1ebfn v\u1edbi l\u01b0\u1ee3ng thu nh\u1eadp kh\u1ea3 d\u1ee5ng m\u00e0 h\u1ed9 gia \u0111\u00ecnh c\u00f3 \u0111\u01b0\u1ee3c.<\/p>\n

C\u00f4ng th\u1ee9c x\u00e1c \u0111\u1ecbnh<\/font><\/h3>\n

N\u1ebfu ta k\u00ed hi\u1ec7u:<\/p>\n

\u0394S l\u00e0 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a m\u1ee9c ti\u00eau d\u00f9ng trong k\u00ec<\/p>\n

\u0394Y l\u00e0 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a thu nh\u1eadp trong k\u00ec<\/p>\n

Khi \u0111\u00f3 (\u0394S\/\u0394Y ) = MPS<\/p>\n

M\u1ed1i li\u00ean h\u1ec7 gi\u1eefa MPC v\u00e0 MPS<\/font><\/h3>\n

C\u00e1c c\u00e1 nh\u00e2n trong n\u1ec1n kinh t\u1ebf kh\u00f4ng ch\u1ec9 ti\u00eau d\u00f9ng m\u00e0 c\u00f2n ti\u1ebft ki\u1ec7m t\u1eeb m\u1ed7i \u0111\u01a1n v\u1ecb thu nh\u1eadp kh\u1ea3 d\u1ee5ng b\u1ed5 sung, do \u0111\u00f3 ti\u1ebft ki\u1ec7m v\u00e0 ti\u00eau d\u00f9ng l\u00e0 h\u00ecnh \u1ea3nh ph\u1ea3n chi\u1ebfu c\u1ee7a nhau. \u0110\u01b0\u1eddng ti\u1ebft ki\u1ec7m c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c t\u1eeb \u0111\u01b0\u1eddng ti\u00eau d\u00f9ng nh\u01b0 \u0111\u01b0\u1ee3c minh h\u1ecda trong H\u00ecnh 19.6<\/p>\n

T\u1ea1i m\u1ee9c thu nh\u1eadp kh\u1ea3 d\u1ee5ng b\u1eb1ng 0, ti\u00eau d\u00f9ng c\u00f3 gi\u00e1 tr\u1ecb l\u00e0 C\u0305 v\u00e0 ti\u1ebft ki\u1ec7m s\u1ebd c\u00f3 gi\u00e1 tr\u1ecb l\u00e0\u00a0– C\u0305. T\u1ea1i m\u1ee9c thu nh\u1eadp kh\u1ea3 d\u1ee5ng YA<\/sub>, thu\u00a0nh\u1eadp v\u1eeba \u0111\u1ee7 trang tr\u1ea3i chi ti\u00eau cho ti\u00eau d\u00f9ng (Yd = C), do \u0111\u00f3 ti\u1ebft ki\u1ec7m b\u1eb1ng 0.<\/p>\n

H\u1ed9 gia \u0111\u00ecnh kh\u00f4ng c\u00f3 t\u00edch l\u0169y cho t\u01b0\u01a1ng lai nh\u01b0ng c\u0169ng kh\u00f4ng ph\u1ea3i \u0111i vay hay d\u00f9ng c\u1ee7a c\u1ea3i \u0111\u00e3 t\u00edch l\u0169y \u0111\u01b0\u1ee3c \u0111\u1ec3 trang tr\u1ea3i cho m\u1ee9c ti\u00eau d\u00f9ng hi\u1ec7n t\u1ea1i. C\u00e1c nh\u00e0 kinh t\u1ebf th\u01b0\u1eddng g\u1ecdi \u0111\u00f3 l\u00e0 \u0111i\u1ec3m v\u1eeba \u0111\u1ee7.<\/p>\n

Xu\u1ea5t ph\u00e1t t\u1eeb c\u00f4ng th\u1ee9c S = Yd – C<\/p>\n

Ta c\u00f3:\u00a0\u00a0<\/p>\n

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\u0394S =\u00a0\u0394Yd –\u00a0\u0394C<\/p>\n

Chia c\u1ea3 2 v\u1ebf cho \u0394Yd, ta c\u00f3:<\/p>\n

\u0394S\/ \u0394Yd = 1 – (\u0394C\/\u0394Yd)<\/p>\n

Suy ra: MPS = 1 – MPC<\/p>\n

Hay MPS + MPC = 1<\/p>\n

V\u00ed d\u1ee5: Theo \u0111\u1ecbnh ngh\u0129a thu nh\u1eadp kh\u1ea3 d\u1ee5ng b\u1eb1ng ti\u00eau d\u00f9ng c\u1ed9ng ti\u1ebft ki\u1ec7m n\u00ean khi thu nh\u1eadp kh\u1ea3 d\u1ee5ng t\u0103ng th\u00eam 1 \u0111\u01a1n v\u1ecb, n\u1ebfu t\u1ed5ng ti\u00eau d\u00f9ng t\u0103ng th\u00eam 0,9 th\u00ec t\u1ed5ng ti\u1ebft ki\u1ec7m s\u1ebd t\u0103ng l\u00ean 0,1.<\/p>\n

K\u1ebft lu\u1eadn<\/b>:\u00a0<\/p>\n

– T\u1ed5ng xu h\u01b0\u1edbng ti\u00eau d\u00f9ng c\u1eadn bi\u00ean (MPC) v\u00e0 xu h\u01b0\u1edbng ti\u1ebft ki\u1ec7m c\u1eadn bi\u00ean (MPS) lu\u00f4n b\u1eb1ng 1. Xu h\u01b0\u1edbng ti\u00eau d\u00f9ng c\u1eadn bi\u00ean c\u00e0ng l\u1edbn th\u00ec xu h\u01b0\u1edbng ti\u1ebft ki\u1ec7m c\u1eadn bi\u00ean c\u00e0ng nh\u1ecf v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.<\/p>\n

\u0110\u1eb7c tr\u01b0ng<\/font><\/span><\/h3>\n

– V\u00ec 0 < MPC < 1 m\u00e0 MPC + MPS = 1 n\u00ean xu h\u01b0\u1edbng ti\u1ebft ki\u1ec7m c\u1eadn bi\u00ean lu\u00f4n n\u0103m trong kho\u1ea3ng t\u1eeb 0 \u0111\u1ebfn 1 hay 0 < MPS < 1.<\/p>\n

– Xu h\u01b0\u1edbng ti\u1ebft ki\u1ec7m c\u1eadn bi\u00ean ch\u00ednh l\u00e0 \u0111\u1ed9 d\u1ed1c c\u1ee7a h\u00e0m ti\u1ebft ki\u1ec7m.<\/p>\n

(T\u00e0i li\u1ec7u tham kh\u1ea3o: Gi\u00e1o tr\u00ecnh Kinh t\u1ebf v\u0129 m\u00f4, NXB T\u00e0i ch\u00ednh; Gi\u00e1o tr\u00ecnh Kinh t\u1ebf h\u1ecdc, NXB \u0110\u1ea1i h\u1ecdc kinh t\u1ebf qu\u1ed1c d\u00e2n)<\/i><\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

\n Xu h\u01b0\u1edbng ti\u00eau d\u00f9ng c\u1eadn bi\u00ean (ti\u1ebfng Anh: Marginal Propensity to Save, vi\u1ebft t\u1eaft: MPS) l\u00e0 l\u01b0\u1ee3ng ti\u1ebft ki\u1ec7m t\u0103ng th\u00eam khi thu nh\u1eadp kh\u1ea3 d\u1ee5ng t\u0103ng th\u00eam m\u1ed9t \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\/27087"}],"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=27087"}],"version-history":[{"count":0,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/27087\/revisions"}],"wp:attachment":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/media?parent=27087"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/categories?post=27087"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/tags?post=27087"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}