L\u1eddi gi\u1ea3i<\/strong><\/p>\n\n\n\n

\u0110\u1ed9 l\u1ec7ch chu\u1ea9n : s = \u221a(s^{2<\/sup>) = 1,54<\/p>\n\n\n\n}

B\u00e0i 1 (trang 128 SGK \u0110\u1ea1i S\u1ed1 10)<\/strong>: s\u1ed1 \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eadp \u1edf b\u00e0i t\u1eadp 1 v\u00e0 c\u1ee7a b\u1ea3ng ph\u00e2n b\u1ed1 t\u1ea7n s\u1ed1 gh\u00e9p l\u1edbp cho \u1edf b\u00e0i t\u1eadp 2 c\u1ee7a B\u00e0i 1.<\/p>\n\n\n\n

L\u1eddi gi\u1ea3i<\/strong><\/ins><\/p>\n\n\n\n

* B\u1ea3ng ph\u00e2n b\u1ed1 t\u1ea7n s\u1ed1 b\u00e0i t\u1eadp 1. <\/p>\n\n\n\n

Tu\u1ed5i th\u1ecd\t<\/td>	1150\t<\/td>	1160\t<\/td>	1170\t<\/td>	1180\t<\/td>	1190\t<\/td>	C\u1ed9ng<\/td><\/tr>
T\u1ea7n s\u1ed1\t<\/td>	3\t<\/td>	6\t<\/td>	12\t<\/td>	6\t<\/td>	3\t<\/td>	30<\/td><\/tr><\/tbody><\/table>\n\n\n\n <\/figure>\n\n\n\n <\/ins><\/p>\n\n\n\n * B\u1ea3ng ph\u00e2n b\u1ed1 t\u1ea7n s\u1ed1 gh\u00e9p l\u1edbp b\u00e0i t\u1eadp 2: <\/p>\n\n\n\n L\u1edbp c\u1ee7a \u0111\u1ed9 d\u00e0i (cm)\t<\/td> [10; 20)\t<\/td> [20; 30)\t<\/td> [30; 40)\t<\/td> [40; 50]\t<\/td> C\u1ed9ng<\/td><\/tr> Gi\u00e1 tr\u1ecb \u0111\u1ea1i di\u1ec7n\t<\/td> 15\t<\/td> 25\t<\/td> 35\t<\/td> 45\t<\/td> <\/td><\/tr> T\u1ea7n s\u1ed1\t<\/td> 8\t<\/td> 18\t<\/td> 24\t<\/td> 10\t<\/td> 60<\/td><\/tr><\/tbody><\/table>\n\n\n\n <\/figure>\n\n\n\n Ki\u1ebfn th\u1ee9c \u00e1p d\u1ee5ng<\/strong><\/p>\n\n\n\n + Ph\u01b0\u01a1ng sai th\u1ec3 hi\u1ec7n m\u1ee9c \u0111\u1ed9 ph\u00e2n t\u00e1n c\u1ee7a d\u00e3y s\u1ed1 li\u1ec7u. Ph\u01b0\u01a1ng sai \nc\u00e0ng nh\u1ecf th\u00ec d\u00e3y s\u1ed1 li\u1ec7u c\u00f3 m\u1ee9c \u0111\u1ed9 ph\u00e2n t\u00e1n c\u00e0ng b\u00e9 (m\u1ee9c \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u \nc\u00e0ng cao). <\/p>\n\n\n\n + C\u00f4ng th\u1ee9c t\u00ednh ph\u01b0\u01a1ng sai \u0111\u1ed1i v\u1edbi b\u1ea3ng ph\u00e2n b\u1ed1 t\u1ea7n s\u1ed1: <\/p>\n\n\n\n <\/figure>\n\n\n\n Trong \u0111\u00f3: n1<\/sub>; n2<\/sub>; n3<\/sub>;…;nk<\/sub> l\u1ea7n l\u01b0\u1ee3t l\u00e0 t\u1ea7n s\u1ed1 c\u1ee7a c\u00e1c gi\u00e1 tr\u1ecb x1<\/sub>; x2<\/sub>; x3<\/sub>;…;xk<\/sub> <\/p>\n\n\n\n <\/figure>\n\n\n\n l\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a d\u00e3y s\u1ed1 li\u1ec7u <\/p>\n\n\n\n <\/figure>\n\n\n\n + \u0110\u1ed9 l\u1ec7ch chu\u1ea9n: \n<\/p>\n\n\n\n \u0110\u1ed9 l\u1ec7ch chu\u1ea9n c\u00f3 c\u00f9ng \u0111\u01a1n v\u1ecb v\u1edbi c\u00e1c s\u1ed1 li\u1ec7u.<\/p>\n\n\n\n B\u00e0i 2 (trang 128 SGK \u0110\u1ea1i S\u1ed1 10)<\/strong>: Hai l\u1edbp \n10C, 10D c\u1ee7a m\u1ed9t tr\u01b0\u1eddng Trung h\u1ecdc ph\u1ed5 th\u00f4ng \u0111\u1ed3ng th\u1eddi l\u00e0m b\u00e0i thi m\u00f4n \nNg\u1eef v\u0103n theo c\u00f9ng m\u1ed9t \u0111\u1ec1 thi. K\u1ebft qu\u1ea3 thi \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u1edf hai b\u1ea3ng ph\u00e2n\n b\u1ed1 t\u1ea7n s\u1ed1 sau \u0111\u00e2y:<\/ins><\/p>\n\n\n\n \u0110i\u1ec3m thi Ng\u1eef v\u0103n c\u1ee7a l\u1edbp 10C<\/p>\n\n\n\n \u0110i\u1ec3m thi<\/td> 5<\/td> 6<\/td> 7<\/td> 8<\/td> 9<\/td> 10<\/td> C\u1ed9ng<\/td><\/tr> T\u1ea7n s\u1ed1<\/td> 3<\/td> 7<\/td> 12<\/td> 14<\/td> 3<\/td> 1<\/td> 40<\/td><\/tr><\/tbody><\/table>\n\n\n\n \u0110i\u1ec3m thi Ng\u1eef v\u0103n c\u1ee7a l\u1edbp 10D<\/p>\n\n\n\n \u0110i\u1ec3m thi<\/td> 6<\/td> 7<\/td> 8<\/td> 9<\/td> C\u1ed9ng<\/td><\/tr> T\u1ea7n s\u1ed1<\/td> 8<\/td> 18<\/td> 10<\/td> 4<\/td> 40<\/td><\/tr><\/tbody><\/table>\n\n\n\n a) T\u00ednh c\u00e1c s\u1ed1 trung b\u00ecnh, ph\u01b0\u01a1ng sai, \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a c\u00e1c b\u1ea3ng ph\u00e2n b\u1ed1 \u0111\u00e3 cho.<\/p>\n\n\n\n b) X\u00e9t xem k\u1ebft qu\u1ea3 l\u00e0m b\u00e0i thi c\u1ee7a m\u00f4n Ng\u1eef v\u0103n \u1edf l\u1edbp n\u00e0o l\u00e0 \u0111\u1ec1u h\u01a1n.<\/p>\n\n\n\n L\u1eddi gi\u1ea3i<\/strong><\/p>\n\n\n\n a) * L\u1edbp 10C: <\/p>\n\n\n\n <\/figure>\n\n\n\n * L\u1edbp 10D: <\/p>\n\n\n\n <\/figure>\n\n\n\n <\/figure>\n\n\n\n <\/figure>\n\n\n\n <\/ins><\/p>\n\n\n\n b) K\u1ebft qu\u1ea3 l\u1edbp 10D c\u00f3 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n nh\u1ecf h\u01a1n k\u1ebft qu\u1ea3 l\u1edbp 10C n\u00ean k\u1ebft qu\u1ea3 l\u1edbp 10D \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n. <\/p>\n\n\n\n Ki\u1ebfn th\u1ee9c \u00e1p d\u1ee5ng<\/strong><\/p>\n\n\n\n + Ph\u01b0\u01a1ng sai th\u1ec3 hi\u1ec7n m\u1ee9c \u0111\u1ed9 ph\u00e2n t\u00e1n c\u1ee7a d\u00e3y s\u1ed1 li\u1ec7u. Ph\u01b0\u01a1ng sai \nc\u00e0ng nh\u1ecf th\u00ec d\u00e3y s\u1ed1 li\u1ec7u c\u00f3 m\u1ee9c \u0111\u1ed9 ph\u00e2n t\u00e1n c\u00e0ng b\u00e9 (m\u1ee9c \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u \nc\u00e0ng cao). <\/p>\n\n\n\n + C\u00f4ng th\u1ee9c t\u00ednh ph\u01b0\u01a1ng sai \u0111\u1ed1i v\u1edbi b\u1ea3ng ph\u00e2n b\u1ed1 t\u1ea7n s\u1ed1: <\/p>\n\n\n\n <\/figure>\n\n\n\n Trong \u0111\u00f3: n1<\/sub>; n2<\/sub>; n3<\/sub>;…;nk<\/sub> l\u1ea7n l\u01b0\u1ee3t l\u00e0 t\u1ea7n s\u1ed1 c\u1ee7a c\u00e1c gi\u00e1 tr\u1ecb x1<\/sub>; x2<\/sub>; x3<\/sub>;…;xk<\/sub> <\/p>\n\n\n\n <\/figure>\n\n\n\n l\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a d\u00e3y s\u1ed1 li\u1ec7u <\/p>\n\n\n\n <\/figure>\n\n\n\n + \u0110\u1ed9 l\u1ec7ch chu\u1ea9n: \n<\/p>\n\n\n\n \u0110\u1ed9 l\u1ec7ch chu\u1ea9n c\u00f3 c\u00f9ng \u0111\u01a1n v\u1ecb v\u1edbi c\u00e1c s\u1ed1 li\u1ec7u.<\/p>\n\n\n\n B\u00e0i 3 (trang 128 SGK \u0110\u1ea1i S\u1ed1 10)<\/strong>: Cho hai b\u1ea3ng ph\u00e2n b\u1ed1 t\u1ea7n s\u1ed1 gh\u00e9p l\u1edbp<\/p>\n\n\n\n Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a nh\u00f3m c\u00e1 m\u00e8 th\u1ee9 1<\/p>\n\n\n\n L\u1edbp kh\u1ed1i l\u01b0\u1ee3ng(kg)<\/td> [0,6;0,8)<\/td> [0,8;1,0)<\/td> [1,0;1,2)<\/td> [1,2;1,4]<\/td> C\u1ed9ng<\/td><\/tr> T\u1ea7n s\u1ed1<\/td> 4<\/td> 6<\/td> 6<\/td> 4<\/td> 20<\/td><\/tr><\/tbody><\/table>\n\n\n\n Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a nh\u00f3m c\u00e1 m\u00e8 th\u1ee9 2<\/p>\n\n\n\n L\u1edbp kh\u1ed1i l\u01b0\u1ee3ng(kg)<\/td> [0,5;0,7)<\/td> [0,7;0,9)<\/td> [0,9;1,1)<\/td> [1,1;1,3)<\/td> [1,3;1,5]<\/td> C\u1ed9ng<\/td><\/tr> T\u1ea7n s\u1ed1<\/td> 3<\/td> 4<\/td> 6<\/td> 4<\/td> 3<\/td> 20<\/td><\/tr><\/tbody><\/table>\n\n\n\n <\/ins><\/p>\n\n\n\n a) T\u00ednh c\u00e1c s\u1ed1 trung b\u00ecnh c\u1ed9ng c\u1ee7a c\u00e1c b\u1ea3ng ph\u00e2n b\u1ed1 t\u1ea7n s\u1ed1 gh\u00e9p l\u1edbp \u0111\u00e3 cho.<\/p>\n\n\n\n b) T\u00ednh ph\u01b0\u01a1ng sai c\u1ee7a c\u00e1c b\u1ea3ng ph\u00e2n b\u1ed1 t\u1ea7n s\u1ed1 gh\u00e9p l\u1edbp \u0111\u00e3 cho.<\/p>\n\n\n\n c) X\u00e9t xem nh\u00f3m c\u00e1 n\u00e0o c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n?<\/p>\n\n\n\n L\u1eddi gi\u1ea3i<\/strong><\/p>\n\n\n\n a) S\u1ed1 trung b\u00ecnh c\u1ee7a nh\u00f3m c\u00e1 m\u00e8 th\u1ee9 nh\u1ea5t: <\/p>\n\n\n\n <\/figure>\n\n\n\n <\/ins><\/p>\n\n\n\n S\u1ed1 trung b\u00ecnh c\u1ee7a nh\u00f3m c\u00e1 m\u00e8 th\u1ee9 hai: <\/p>\n\n\n\n <\/figure>\n\n\n\n b) Ph\u01b0\u01a1ng sai c\u1ee7a b\u1ea3ng ph\u00e2n b\u1ed1 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a nh\u00f3m c\u00e1 m\u00e8 th\u1ee9 1:<\/p>\n\n\n\n <\/figure>\n\n\n\n Ph\u01b0\u01a1ng sai c\u1ee7a b\u1ea3ng ph\u00e2n b\u1ed1 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a nh\u00f3m c\u00e1 m\u00e8 th\u1ee9 2: <\/p>\n\n\n\n <\/figure>\n\n\n\n c) Nh\u1eadn x\u00e9t: s1<\/sub>2<\/sup> < s2<\/sub>2<\/sup> n\u00ean nh\u00f3m c\u00e1 th\u1ee9 nh\u1ea5t c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n. \n<\/p>\n\n\n\n Ki\u1ebfn th\u1ee9c \u00e1p d\u1ee5ng<\/strong><\/p>\n\n\n\n + Ph\u01b0\u01a1ng sai th\u1ec3 hi\u1ec7n m\u1ee9c \u0111\u1ed9 ph\u00e2n t\u00e1n c\u1ee7a d\u00e3y s\u1ed1 li\u1ec7u. Ph\u01b0\u01a1ng sai \nc\u00e0ng nh\u1ecf th\u00ec d\u00e3y s\u1ed1 li\u1ec7u c\u00f3 m\u1ee9c \u0111\u1ed9 ph\u00e2n t\u00e1n c\u00e0ng b\u00e9 (m\u1ee9c \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u \nc\u00e0ng cao). <\/p>\n\n\n\n + C\u00f4ng th\u1ee9c t\u00ednh ph\u01b0\u01a1ng sai \u0111\u1ed1i v\u1edbi b\u1ea3ng ph\u00e2n b\u1ed1 t\u1ea7n s\u1ed1: <\/p>\n\n\n\n <\/figure>\n\n\n\n Trong \u0111\u00f3: n1<\/sub>; n2<\/sub>; n3<\/sub>;…;nk<\/sub> l\u1ea7n l\u01b0\u1ee3t l\u00e0 t\u1ea7n s\u1ed1 c\u1ee7a c\u00e1c gi\u00e1 tr\u1ecb x1<\/sub>; x2<\/sub>; x3<\/sub>;…;xk<\/sub> <\/p>\n\n\n\n <\/figure>\n\n\n\n l\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a d\u00e3y s\u1ed1 li\u1ec7u <\/p>\n","protected":false},"excerpt":{"rendered":" Tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi To\u00e1n 10 \u0110\u1ea1i s\u1ed1 B\u00e0i 4 trang 126: T\u00ednh ph\u01b0\u01a1ng sai c\u1ee7a b\u1ea3ng 6 L\u1eddi gi\u1ea3i Tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi To\u00e1n 10 \u0110\u1ea1i s\u1ed1 B\u00e0i 4 trang 126: L\u1eddi gi\u1ea3i \u0110\u1ed9 l\u1ec7ch chu\u1ea9n : s = \u221a(s2) = 1,54 B\u00e0i 1 (trang 128 SGK \u0110\u1ea1i S\u1ed1 10): s\u1ed1 \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eadp […]<\/p>\n","protected":false},"author":12,"featured_media":44360,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1633],"tags":[],"yoast_head":"\n