ÔN TẬP: CÁC SỐ ĐẶC TRƯNG ĐO MỨC ĐỘ PHÂN TÁN CỦA MẪU SỐ LIỆU GHÉP NHÓM (trung bình 1)

Home Lớp 12 Toán lớp 12 - Sách Kết nối tri thức Bài tập cuối chương 3. CÁC SỐ ĐẶC TRƯNG ĐO MỨC ĐỘ PHÂN TÁN CỦA MẪU SỐ LIỆU GHÉP NHÓM.Bài tập trung bình

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y=\"-0.5\"><\/image> <\/g> <\/svg><\/span><\/p>Tìm t\u1ea7n s\u1ed1 tích l\u0169y c\u1ee7a nhóm [10; 12).<\/p>","options":["A.<\/strong> 6","B.<\/strong> 14","C.<\/strong> 18","D.<\/strong> 38"],"correct":"4","level":"2","hint":"S\u1eed d\u1ee5ng \u0111\u1ecbnh ngh\u0129a t\u1ea7n s\u1ed1 tích lu\u1ef9.<\/p>","answer":"Ch\u1ecdn D.<\/strong> 38<\/span><\/p>T\u1ea7n s\u1ed1 tích l\u0169y c\u1ee7a nhóm [10; 12) là:<\/p>$cf_3=n_1+n_2+n_3=6+14+18=38$<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-10-18 01:46:07","option_type":"txt","len":0},{"id":"5812","post_id":"7604","mon_id":"1159285","chapter_id":"1159394","question":"M\u1eabu s\u1ed1 li\u1ec7u ghép nhóm th\u1ed1ng kê m\u1ee9c l\u01b0\u01a1ng c\u1ee7a m\u1ed9t công ty (\u0111\u01a1n v\u1ecb: tri\u1ec7u \u0111\u1ed3ng) \u0111\u01b0\u1ee3c cho trong b\u1ea3ng d\u01b0\u1edbi \u0111ây:<\/p><svg height=\"225\" width=\"200\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> 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ekeWrH5XXpiZCYs3EFwDpYOnAvTa8uKmEuyXOW6ZTS5BG3ZVT4X5lyJWesNPgvfDp1saJJzXUVSk\/Y54hksHVgJ0+YMYHnWcYXP13reMs4N2OQ8m3P2NB8w2WJgJemBVjPTOhRp9V24WeMZLB1YCdO2CEFHEYkseO5B2pKiQCdtmd3nYs7Zc791q1KtdWzJZo1bsHRgPUy67e+rQPP78TnSlhQFLl1bp3KhtjS5kdfkbLZVdskBBbdg6cB6mARlIRj6yIuGpCjQSVsEJvuFaItSZvbcsmSVLOkYbsHSgZUwbaXng+5LDP5py06kFSkKdNLWZC7MueH9SyXpRprDobLfWSUhikniFiwdOBcmK5Z2Q46Msnh5VXLSirQiRYFO2tIeBHx45lwZ5lM5l3SjelKfwVZJiGKSuAVLB86FaUry50jL81xOGpJWpCjQSVtQ88mHJ+eFt2MLOZd0UT\/7BGGxjIWF03bwqztvaUkGPv\/1nLQlrUhRoJ+2dCFDaxaprb6EUCq37feJ7Bf2aDcgLJwWxWSMgbgFSwfOhWmPSW1PhHaur6e6CWlFigIttaXtRmA1Kp8baT1QhPzl89GbFwlLOJoaWtQxVgg9NMUEeLmLkmBpnySewbI362GGm1xKlcNrvU80YwnzMU\/lhb9Ldhwt8rqEa0Op0cs6QP20ba5E+ZqK7JXmPPEMlv14NEzxvdP\/d6pWpDkpCrRct3YlLS7R4nYyMLTFXF\/4IBvnYLlnDtkYcR3aQlUMdrnJ7kFtnZf5HsTlc8jGiEvXFouHWuyzqmsLXnjfIOIfLPfMIRsj1murz2DTHEeHhg\/AKlRop+68XBIs98whGyPWa0vga3C4UrIMrxMxSQiWe+aQjREnaysZmKnzTG21ZKbOM7XVkpk6z9RWS2bqPFNbLZmp80xttWSmzjO11ZKZOs\/UVktm6jxTWy2ZqfNMbbVkps5zk7aO\/ubzwfz\/kfT+uy\/ae0XPPvPE8ncNTqJ+3i7fyiqpX6bV1av7zaceJrm1NxwZjoXvC23nkI0R67VV\/qZLAPbSY6ktvRcVULptpN7Goebwsm9JZBT6oNCu4rfqepgaBb1oqjDRWR95DdkYsV5b\/h0bzSFFKwTR4OBLPVq9lfX2sf88yJP+mLPvql\/JFhL\/YNmVR8NkXFRkidVesWQh304akqJAG22xJhGkFmEhDA9jhoOi5cKK5zqiFeqkiUOlx7TlX3EOHVAll\/lu4JIwpSRgFhuyDi9XDu2OaKMto4kmDBhfyYt9JUi5geC5kbYpV7TF1K9oi1KMrLK+wxXiHCwdWAlTdmAWG7JTt\/sVHNod0VhbNqWOKkZuYLIeI8cFbQEL3wW17s1piwopQjdyA6GrVnQ0BBHPYOnAuTBJpuzAjObcYVsc2h1xZm2hm2APtApBXYXiXNJFdINdN4NyA2VXtfoe7ZuIZ7B04FyY\/obJjPWctOXQ7ojzaMv2xKPHmrbrFpXYviA3UHbVopAK68QtWDpwLkyzg9J4F9pSJXss0ZU8omPfotxA2VU7zSw5oOAWLB04F6bZQWm8fW2xMXFSZt9ZeFg+iXN5ZKUMLcoNlF21SipRGHELlg6cC1M3IoIZ55z34NDuiDNoi8WDbW4PYcG5PJp9DpPOlSiM4do+nAuTQZEdmNGcb\/wsj51Fa8k5Zh3nkm72OUw6z0XhGa7tw7kwoezALOZ8y88gOPEEYbF6vfbS0w2lVkl6oNxA2VV7+nV15y3I4qQis5jzdT87rWgLAU3+7IMxeHpygNBVrZ5vGeUGyq5aFJMxBuIWLB1YCdO2RZuxUpt+XtybNCRFgZbasqgAJyo\/S3R+P5R9HPVDgL8KnYXSQFrUAwuhroyD05S29HyrLnojnsGyN4+GqRO9xKQpvdOdU0nalaJAG22ZsQSlRKXRmkR936EUH6WyFIHRyzpgTmGH4qlq5+yTxDNY9uPyMDl+2Axhye8jLEiLUhRouW7tSlrscBSFerTNkCwcD5yD5Z45ZGPEdWgLVTHYHY6iUIetoz8YGHEOlnvmkI0Rl64tFg+1ePSw1YTaghfeN4j4B8s9c8jGiPXa6jPYNMdhv+FDigoV2qk7L5cEyz1zyMaI9doS+BocrpQsw+tETBKC5Z45ZGPEydpKBmbqPFNbLZmp80xttWSmzjO11ZKZOs\/UVktm6jxTWy2ZqfNMbbVkps4ztdWSmTrP1FZLZuo8U1stmanzTG21ZKbOc5O2jv6e+MH8\/78VqHdtm79PoVcn6q+zwvffffH1Vz\/lX1++0t8TiZeEP\/7wgu5Tn3zsvL\/wDtkYsV5b5fsCBGn\/avRohHqbBbTVlt70otrK+\/Ko3ySFnt5+8zm9BqjQrus9CGJRvB6V2PcmrUtRYL22vCa0VPgg69pieTj4tdMWEvFvkc\/lV\/\/WCIdnn3miXKWk+KMTwxP\/YOlJmyQBfd6AKknTUhRooy0GjCD9S\/GV4UGI3rOJtlSnT\/SktmhLpThrrSqpSq7ivVPmBtNJCWQB0xlDmAy\/A2laigJttGU00VS0xeEAyg000ZbRNuUyuYjJVtbK69HMeBzwnBNfIM7B0o10NSy9tnLfoLY06cGctkgHwrL1A9S1pamJ28L3jK17ZXKtiA6EIk8kJbfK9PDEM1jOyKP535tDNkZ01RZCwYHBW64tqxDUPUXrXqktW7Qokl6xoLNyfdLqi0+wTxLPYDkjLV2VhXlXDtkY0VVbjJnW8OXaarVuUY\/sQGcp25fplfeEFoV6WyduwXJGnpSrPThkY0Q\/bRGw3d4v19apnNOWTlGCGW0lC88d7NC25HkEbsFyLiqryGvhSXEPDtkY0UlbLBX+YWZ\/bZkdmNF6O+ccopgkbsFyLhIFs2XJWrsfh2yM6KQts08iDO0WWvdCnXpwJZjRtsXgfI3aUoDnFRYcsjHiXrTlV0ozzjmbPUQxSdyCpT8V3bmel3oO2RjRSVuBfqQn61nNOblAnXOBtWjO4fBr69lVnLf0s08QFj1f0vnmHLIx4tK1Rcp04t54nwhtW7Sq7EF2uGO3KJboHrdg6UmO7fa8OuAs+yPtSlGgpba8YlgkKo9YlmvLbuXA0TWfFm1xAmXNWpB04IWqvKxWo0VpsE8Sz2DpSZsGAQs735w0LUWBNtoyYwnz8VyuLS02UkxlLfQVBoT6UZJNdNatydZVWmnOE89g6Ubbu0v4u\/KepGkpCrRct3YlLfY5QLyX\/\/\/WBg7ZGHEd2kJVDHaf3zG0y1zFexAXyCEbIy5dWyweavHoYasJtQUvvG8Q8Q+We+aQjRHrtdVnsGmOo0OfWx6FdurOyyXBcs8csjFivbYEvgaHKyXL8DoRk4RguWcO2RhxsraSgZk6z9RWS2bqPFNbLZmp80xttWSmznNaW4lEE0hR4CNt\/d2\/fze5gpk6z9RWS2bqPFNbLZmp80xttWSmzjO11ZKZOs\/UVktm6jxTWy15Ral75Y2\/obcl\/uJf\/8t8futP\/\/FHfuwnMX7vJ77\/M7\/yZV+0hFwoRYHU1lZeUeqe+KEfprcBCMgcPvfyV8zyxte\/yWd0dpK8uESKAqmtrbyW1P3+X71DV0tgDw5\/8s\/\/IcvP\/NLwpjh\/9XUJ8ZeiQGprK68ldUiE\/S4YPaUkH84XXv1DWUxtR4mzFAVSW1t5FalDHINGHj1iW0RDL\/\/O18qdTg7ALKYt\/M1YJ85SFEhtbeWpqbMBE9iJWE50EvqJn\/1M5XBDqS6pI1wl6iAVQE\/Mwe+YZrSuLt8WcZaiQGprK1ekzt+vcXA+fHoAAgrOxtXaQq\/c9B2KPw47yKPvg2lKW5VeBeIsRYHU1lauSJ1fJBh1Niw2ncP3PQeChtCQnasE7Xd+NTX\/1NaZuSJ1XlusYcHCZ++8B2nCnkfwAUtq6xK5InWlkpZoa\/WeOEm\/UfLVb9Pmk9o6M1ek7hK0BU1PfPYdMAfTVp7lz8MVqVunreZk6aI5Vi99VevAHExb+QziPFyRugvRFqQ5u1XMZ6cXxxWp668t7afIyD8\/QzG6S9VX68MbX\/+mLFKbiW8J8ZeiQGprK1ekzh+c9TtMaWlLO7bzQXemSArBhbbUDYkJheGcv1Wfk6emzjYaQ2lpvnQhFBYhUxiKodFJ0aA2e8fmcy9\/5SRhQS6UokBqayszdZ6prZbM1HmmtloyU+eZ2mrJTJ1naqslM3Weqa2WzNR5prZaMlPnmdpqyUydZ2qrJTN1ntPaSiSaQIoCH31KJNoitZXYC6mtxF5IbSX2wYcf\/j+SP81E3cRUmgAAAABJRU5ErkJggg==\" y=\"-0.5\"><\/image> <\/g> <\/svg><\/span><\/p>Tìm t\u1ee9 phân v\u1ecb th\u1ee9 nh\u1ea5t c\u1ee7a m\u1eabu s\u1ed1 li\u1ec7u ghép nhóm (làm tròn \u0111\u1ebfn hàng ph\u1ea7n tr\u0103m).<\/p>","options":["A.<\/strong> 9,12","B.<\/strong> 8,93","C.<\/strong> 8,81","D.<\/strong> 8,96"],"correct":"2","level":"2","hint":"S\u1eed d\u1ee5ng công th\u1ee9c tính t\u1ee9 phân v\u1ecb th\u1ee9 nh\u1ea5t.<\/p>","answer":"Ch\u1ecdn B.<\/strong> 8,93<\/span><\/p>Ta có: $\\dfrac{n}{4}=\\dfrac{50}{4}=12,5$<\/span>.<\/p>Nhóm 2 là nhóm \u0111\u1ea7u tiên có t\u1ea7n s\u1ed1 tích l\u0169y l\u1edbn h\u01a1n 12,5.<\/p>Xét nhóm 2 là nhóm [8; 10) có \u0111\u1ea7u mút trái s = 8, \u0111\u1ed9 dài h = 2, t\u1ea7n s\u1ed1 $n_2$<\/span> = 14 và t\u1ea7n s\u1ed1 tích l\u0169y c\u1ee7a nhóm 1 là $cf_1=6$<\/span>.<\/p>T\u1ee9 phân v\u1ecb th\u1ee9 nh\u1ea5t c\u1ee7a m\u1eabu s\u1ed1 li\u1ec7u ghép nhóm là<\/p>$Q_1=s+\\dfrac{12,5-cf_1}{n_2}.h=8+\\dfrac{12,5-6}{14}.2\\approx8,93$<\/span> (tri\u1ec7u \u0111\u1ed3ng)<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-10-18 01:51:38","option_type":"txt","len":0},{"id":"5814","post_id":"7604","mon_id":"1159285","chapter_id":"1159394","question":"Th\u1ed1ng kê cân n\u1eb7ng (\u0111\u01a1n v\u1ecb kg) c\u1ee7a h\u1ecdc sinh l\u1edbp 11A cho trong b\u1ea3ng d\u01b0\u1edbi \u0111ây:<\/p><svg height=\"255\" width=\"250\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g><title><\/title><rect fill=\"#fff\" height=\"257\" id=\"canvas_background\" width=\"252\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><image height=\"258\" id=\"svg_1\" width=\"253\" x=\"-2.5\" 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\" y=\"0\"><\/image> <\/g> <\/svg><\/span><\/p>Tính cân n\u1eb7ng trung bình c\u1ee7a h\u1ecdc sinh l\u1edbp 11A?<\/p>","options":["A.<\/strong> 50,1","B.<\/strong> 52,83","C.<\/strong> 50,81","D.<\/strong> 51,81"],"correct":"4","level":"2","hint":"S\u1eed d\u1ee5ng công th\u1ee9c tính giá tr\u1ecb trung bình<\/p>","answer":"Ch\u1ecdn D.<\/strong> 51,81<\/span><\/p>Trong m\u1ed7i kho\u1ea3ng cân n\u1eb7ng, giá tr\u1ecb \u0111\u1ea1i di\u1ec7n là trung bình c\u1ed9ng c\u1ee7a giá tr\u1ecb hai \u0111\u1ea7u mút nên ta có b\u1ea3ng sau:<\/p><svg height=\"255\" width=\"230\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g> <title><\/title> <rect fill=\"#fff\" height=\"257\" id=\"canvas_background\" width=\"232\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g> <title><\/title> <image height=\"260\" id=\"svg_1\" width=\"234\" x=\"-3\" 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\" y=\"-3\"><\/image> <\/g> <\/svg><\/span><\/p>T\u1ed5ng s\u1ed1 h\u1ecdc sinh là n = 42.<\/p>Cân n\u1eb7ng trung bình c\u1ee7a h\u1ecdc sinh l\u1edbp 11A là:<\/p>$\\overline{x}=\\dfrac{10.43+7.48+16.53+4.58+2.63+3.68}{42}\\approx51,81$<\/span> (kg)<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-10-18 01:55:21","option_type":"txt","len":0}]}