{"id":665,"date":"2018-09-23T15:48:16","date_gmt":"2018-09-23T08:48:16","guid":{"rendered":"https:\/\/thienhabet.com\/?p=665"},"modified":"2020-08-14T03:36:07","modified_gmt":"2020-08-13T20:36:07","slug":"cach-tinh-lo-xien","status":"publish","type":"post","link":"https:\/\/\/cach-tinh-lo-xien","title":{"rendered":"C\u00e1ch ch\u01a1i v\u00e0 t\u00ednh l\u00f4 xi\u00ean 2 – xi\u00ean 3 ch\u00ednh x\u00e1c cao"},"content":{"rendered":"
\u0110\u00e1nh l\u00f4 xi\u00ean \u0111ang d\u1ea7n tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn v\u1edbi nh\u1eefng ng\u01b0\u1eddi ch\u01a1i l\u00f4 \u0111\u1ec1. L\u00f4 xi\u00ean hi\u1ec7n c\u00f3 c\u00e1c lo\u1ea1i l\u00f4 xi\u00ean 2, xi\u00ean 3 v\u00e0 xi\u00ean 4. V\u1eady c\u00e1ch ch\u01a1i l\u00f4 xi\u00ean 2 nh\u01b0 th\u1ebf n\u00e0o? C\u00e1ch t\u00ednh l\u00f4 xi\u00ean 2 v\u00e0 x\u00e1c su\u1ea5t c\u1ee7a n\u00f3 ra sao? H\u00f4m nay trong m\u1ee5c l\u00f4 \u0111\u1ec1 tr\u1ef1c tuy\u1ebfn, nh\u00e0 c\u00e1i Thienhabet<\/strong><\/a> xin gi\u1edbi thi\u1ec7u v\u1edbi c\u00e1c b\u1ea1n v\u1ec1 l\u00f4 xi\u00ean 2 c\u0169ng nh\u01b0 c\u00e1ch t\u00ednh l\u00f4 xi\u00ean 2.<\/p>\n[toc]\n Hi\u1ec7n nay c\u00f3 c\u00e1c lo\u1ea1i l\u00f4 xi\u00ean sau, b\u1ea1n c\u1ea7n bi\u1ebft c\u00e1c lo\u1ea1i l\u00f4 xi\u00ean tr\u01b0\u1edbc khi \u0111i \u0111\u1ebfn <\/span>c\u00e1ch ch\u01a1i l\u00f4 xi\u00ean. <\/b><\/p>\n V\u00ed d\u1ee5:<\/strong> l\u00f4 xi\u00ean 2: 52 \u2013 59, hay 03 \u2013 10.<\/span><\/p>\n V\u00ed d\u1ee5:<\/strong> l\u00f4 xi\u00ean 2: 52 \u2013 59 \u2013 90, hay 03 \u2013 10 \u2013 69.<\/span><\/p>\n V\u00ed d\u1ee5:<\/strong>\u00a0l\u00f4 xi\u00ean 2: 52 \u2013 59 \u2013 90 \u2013 84, hay 03 \u2013 10 \u2013 69 \u2013 47.<\/span><\/p>\n V\u00ed d\u1ee5:<\/strong> l\u00f4 xi\u00ean 2: 20-02 c\u1ee7a \u0111\u00e0i H\u00e0 N\u1ed9i hay l\u00f4 xi\u00ean 2 52-59 c\u1ee7a \u0111\u00e0i HCM.<\/p>\n V\u00ed d\u1ee5:<\/strong><\/p>\n N\u1ebfu trong b\u1ea3ng k\u1ebft qu\u1ea3 c\u1ee7a \u0111\u00e0i ch\u1ecdn c\u00f3 27 gi\u1ea3i \u00a0th\u01b0\u1edfng th\u00ec k\u1ebft qu\u1ea3 l\u00f4 l\u00e0 nh\u1eefng con s\u1ed1 cu\u1ed1i c\u00f9ng c\u1ee7a 27 s\u1ed1 \u0111\u00f3.<\/p>\n T\u1ee9c l\u00e0 trong 100 s\u1ed1 t\u1eeb 00 \u0111\u1ebfn 99 th\u00ec c\u00f3 27 s\u1ed1 tr\u00f9ng v\u1edbi k\u1ebft qu\u1ea3 s\u1ed5 x\u1ed1. V\u1eady x\u00e1c xu\u1ea5t tr\u00fang l\u00f4 cao nh\u1ea5t l\u00e0 27%.<\/p>\n Trong tr\u01b0\u1eddng h\u1ee3p gi\u1ea3i th\u01b0\u1edfng \u1edf c\u00e1c m\u1ee5c gi\u1ea3i th\u01b0\u1edfng kh\u00e1c nhau m\u00e0 c\u00f3 nh\u1eefng s\u1ed1 cu\u1ed1i tr\u00f9ng nhau th\u00ec x\u00e1c su\u1ea5t tr\u00fang gi\u1ea3m \u0111i. Theo th\u1ef1c t\u1ebf , b\u1ec9nh qu\u00e2n ch\u1ec9 c\u00f3 21,5 s\u1ed1 kh\u00e1c nhau.<\/p>\n V\u00ec v\u1eady, c\u00e1ch t\u00ednh x\u00e1c su\u1ea5t l\u00f4 xi\u00ean 2 l\u00e0 = 21,5% x 21,5% = 0,046. T\u1ee9c l\u00e0 x\u00e1c su\u1ea5t \u0111\u00e1nh tr\u00fang l\u00e0 4,6%.<\/p>\n T\u01b0\u01a1ng t\u1ef1 v\u1edbi c\u00e1c xi\u00ean 3, xi\u00ean 4<\/p>\n Qua c\u00e1ch t\u00ednh l\u00f4 xi\u00ean 2 tr\u00ean c\u00f3 th\u1ec3 th\u1ea5y mu\u1ed1n th\u1eafng b\u1ea1n c\u1ea7n ph\u1ea3i chu\u1ea9n b\u1ecb m\u1ed9t s\u1ed1 v\u1ed1n \u0111\u1ee7 v\u00e0 h\u1ee3p l\u00fd \u0111\u1ec3 \u0111\u1ec1 ph\u00f2ng r\u1ee7i ro m\u1ea5t \u0111i s\u1ed1 ti\u1ec1n c\u01b0\u1ee3c ho\u00e0n to\u00e0n.<\/p>\nL\u00f4 xi\u00ean l\u00e0 g\u00ec?<\/h2>\n
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C\u00e1c lo\u1ea1i l\u00f4 xi\u00ean hi\u1ec7n nay<\/h2>\n
L\u00f4 xi\u00ean 2 s\u1ed1<\/strong><\/h4>\n
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L\u00f4 xi\u00ean 3 s\u1ed1<\/strong><\/h4>\n
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L\u00f4 xi\u00ean 4 s\u1ed1<\/strong><\/h4>\n
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C\u00e1ch t\u00ednh l\u00f4 xi\u00ean 2<\/h2>\n
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C\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang l\u00f4 xi\u00ean 2<\/h2>\n