{"common":{"save":0,"post_id":"7062","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5017","post_id":"7062","mon_id":"1158924","chapter_id":"1159152","question":"<p>Cho m\u1eabu s\u1ed1 li\u1ec7u ghép nhóm v\u1ec1 th\u1ed1ng kê th\u1eddi gian hoàn thành (phút) c\u1ee7a m\u1ed9t bài ki\u1ec3m tra tr\u1ef1c tuy\u1ebfn c\u1ee7a 100 h\u1ecdc sinh, ta có b\u1ea3ng s\u1ed1 li\u1ec7u sau.<\/p><p><span class=\"svgedit\"><svg height=\"100\" width=\"440\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g><title><\/title><rect fill=\"#fff\" height=\"102\" id=\"canvas_background\" width=\"442\" 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=\"87\" id=\"svg_1\" stroke=\"null\" width=\"441.00003\" x=\"0\" xlink:href=\"data:image\/png;base64,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\" y=\"5.5\"><\/image> <\/g> <\/svg><\/span><\/p><p>Th\u1eddi gian trung bình \u0111\u1ec3 100 h\u1ecdc sinh hoàn thành bài ki\u1ec3m tra là<\/p>","options":["<strong>A.<\/strong> 38,92 phút","<strong>B.<\/strong> 38,29 phút","<strong>C.<\/strong> 39,28 phút","<strong>D.<\/strong> 39,82 phút"],"correct":"1","level":"3","hint":"","answer":"<p>Th\u1eddi gian trung bình \u0111\u1ec3 100 h\u1ecdc sinh hoàn thành bài ki\u1ec3m tra là<\/p><p><span class=\"math-tex\">$\\overline{x}=\\dfrac{4.34+13.36+38.38+27.40+14.42+4.44}{100}=38,92$<\/span> phút.<\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 38,92 phút.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-12-21 01:46:31","option_type":"txt","len":2},{"id":"5019","post_id":"7062","mon_id":"1158924","chapter_id":"1159152","question":"<p>Cho m\u1eabu s\u1ed1 li\u1ec7u ghép nhóm v\u1ec1 th\u1ed1ng kê chi\u1ec1u cao (mét) c\u1ee7a 35 cây b\u1ea1ch \u0111àn trong r\u1eebng, ta có b\u1ea3ng s\u1ed1 li\u1ec7u th\u1ed1ng kê sau.<\/p><p><span class=\"svgedit\"><svg height=\"100\" width=\"410\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g><title><\/title><rect fill=\"#fff\" height=\"102\" id=\"canvas_background\" width=\"412\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_1\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><image height=\"98\" id=\"svg_2\" width=\"412\" x=\"0\" xlink:href=\"data:image\/png;base64,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\" y=\"1\"><\/image> <\/g> <\/svg><\/span><\/p><p>Chièu cao trung bình (mét) c\u1ee7a 35 cây b\u1ea1ch \u0111àn trên (k\u1ebft qu\u1ea3 làm tròn \u0111\u1ebfn hàng ph\u1ea7n nghìn) là<\/p>","options":["<strong>A.<\/strong> 7,478 mét","<strong>B.<\/strong> 7,479 mét","<strong>C.<\/strong> 7,477 mét ","<strong>D.<\/strong> 7,476 mét"],"correct":"2","level":"3","hint":"","answer":"<p>Chi\u1ec1u cao trung bình c\u1ee7a 35 cây b\u1ea1ch \u0111àn là<\/p><p><span class=\"math-tex\">$\\overline{x}=\\dfrac{6.6,75+13.7,25+10.7,75+6.8,25}{35} \\approx 7,479$<\/span> mét.<\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 7,479 mét.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-12-21 02:06:38","option_type":"txt","len":2},{"id":"5021","post_id":"7062","mon_id":"1158924","chapter_id":"1159152","question":"<p>Cho m\u1eabu s\u1ed1 li\u1ec7u ghép nhóm v\u1ec1 th\u1ed1ng kê nhi\u1ec7t \u0111\u1ed9 t\u1ea1i m\u1ed9t \u0111\u1ecba \u0111i\u1ec3m trong 30 ngày, ta có b\u1ea3ng s\u1ed1 li\u1ec7u sau.<\/p><p><span class=\"svgedit\"><svg height=\"100\" width=\"420\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g><title><\/title><rect fill=\"#fff\" height=\"102\" id=\"canvas_background\" width=\"422\" 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=\"100\" id=\"svg_1\" width=\"413\" x=\"3.5\" xlink:href=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZ0AAABkCAYAAABdNe3HAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAABEOSURBVHhe7Z2LldW4EkVJgRhIgRwIYWKYFMiADMiACIhgEiCByYAceOsA51Gqkfyt45bbZ6+l1S1\/ZGm77LrydcObH8YYY8xFOOkYY4y5DCcdY4wxl+GkY4wx5jKapPPmzRsXFxcXF5fSEvlP0nkiTx23GnvVYK8a7FVD9trUnirdwabBXjXYqwZ71ZC9NrWnSnewabBXDfaqwV41ZK9N7Yz0Dx8+\/Nz\/33\/\/\/b3kD\/\/888\/PdfgJ\/v777x\/v3r37+fsIbP\/p06fftV+gbSyPbUXQhyOgPVOPvWqwVw32qiF7bWpnpDPp9G78R5JOD+yDfZGMcl+PtgnOjNuMsVcN9qrBXjVkr03tjHQmHZQvX778XvqLiqSDWU6eRcXjOOnMh71qsFcN9qohe21qZ6Qj6bCgnZggRkkHP7GcJYJ6fLwWH62hxBlVbofH2Qr2MfXYqwZ71WCvGrLXpnZGOhMOQDsxKfSSDur4SZCE4j5Yz6TDhBOTUDweYCI7Ato29dirBnvVYK8astemdkZ6TAJ47IW2+PhrlHQi3IfgdyaZXkJhIoptOunMhb1qsFcN9qohe21qZ6TnmQd+Z3u9pJMTBJMOH8vhdyYdbBtnOSQud9KZD3vVYK8a7FVD9trUzkjPSYczESSDs0kHv48K2gJOOvNhrxrsVYO9ashem9oZ6TnpACQNtMmfZ5IOfx\/hpDMf9qrBXjXYq4bstamdkd5LOgCJAO2iHE06o7bjNvjppDMX9qrBXjXYq4bstamdkT5KDHy0hnI06bCNONtBG1hGnHTmw1412KsGe9WQvTa1M9JHSQcwQRxNOgDLsYwl7x\/Xo609YB9Tj71qsFcN9qohe21qT5XuYNNgrxrsVYO9ashem9odpGOGg5lSJQ42DfaqwV412KuG7LWpPVW6g02DvWqwVw32qiF7bWpPle5g02CvGuxVg71qyF6b2lOlO9g02KsGe9Vgrxqy16b2VOkONg32qsFeNdirhuy1qb2EdL7qnF9z5ivUV\/Sp+hh8RRwlvvZNsKz3enl+LXz0CnoEbW3dh+3jJ+HfQCmobrfnNTtDiePL4EWULa\/Ux\/hDWfsbsPxnAD3XVaDdSiq80tfaeJfitXfMWHCM1x6viKG8ngXtjaAXFh4vkreJ18GVXpua6qA9EGwcPEs+MZCC7bbcfM+AY1WSb0ARXpy9MWF5DCy0sTR2XsA5aEf7YNu8PUA7Csc4ViXZK+MkXmA9JwRjxLp4sfXgOcKFSLDv6Jzygs3r0c5onzPgWJWc9Qqwbmk96LWB467FXt4G7TwhXgnaWeob4y\/GdT4Oj81tch1c5bWp5ZVX0Bt8vNgB6ksn5SzV487BRhg8KPnkYvy5H1w2GjuOEQMLMADjPlzG0msPy7P3s6DNSrJXjL3nuecljj\/GWg+cGxwrwjjtOcLxsG7Ul7Xj7QXHquSMVxDjeuk67e3fi9cItu+tx7LXHK+EfpZiCMfJ95N8rC3bgCu8NrVq6T148bIwqKJU3mzjNkpwjEpysAGOEycUJ\/9I0mEbSzBIGTj0jT7l9iK9oDzLWl\/30vPaA9tgW4I6Cl3EWANbvC7ty+P1+sb1lcziFTDe6DDG1pF4zbDtDPrxWuM10rtXbPGa4w6\/Z490H8\/ZFV6bWrX0TO\/CRT0uo9AYhKiPTkoFaL+StWDrBRLI40QbewOA\/mIgkaWk0wvAs1ztFTDG8gUGevG3FbqLccn2sGzUt7hNFWivkjNesR+WLcXWEkvxynU9nhCvHOPe2Om1iXqOe24X27\/Ca1PLK6vBScg3UQYrheD3fAKOBvRWqse9FmyjpAOwH\/rT87AF7Ifj91jyyADMgXkGtFfJlosY24yOe2aMOG4+Z6jT9VLfcMwj53LELF4xJu539BrFPnSYWVr3hHhFfK3tn0FbKDFWR664PCadK7w2tbyyGgjMF18c5FJmrxYRqR73WrAhIPINjGOPY8Q2e\/q2tj3axno474F1d745cnyjODl6QfHGEL3xWGSpb1iO9VXM4JUuea1ym1Fs9ViKV7bXuxcQrH+t8Uq\/R8eH\/TieUdznc0jOHLcH+0GaWl5ZDU5AHkwUwhtvL9C4jYLqca8FWy\/p9JYB9G1LAPACXrroGeSjbbYeaytXeuXYlvo\/uviWwDGxT+\/CjMuW+oblWF\/FDF4Rb3HZWmxl1uJ1qU+k168zzOCV7PXZI7aP33Pc83p49UknX3zxRjBKOnEbBdXjXrtgegmm5wZg+VoAYBuMYS1A1wIZ6+54EaPPW\/q+N454Y8zxSI+jktsfnduj4BiV7PVKj6OyNtYt8brFGdp4rfE62ncP2J\/HiL8T3m\/zeVB7bWrV0jM9kbyAeaH2BsxtloL0DNXjXguYXtLpLQPRTQ8cZ2v\/lzzyRpJvsGe4witiZc0R4Ri3bMuEszXmls751mNuZTavYCm2Ilvidct5eu3xiv2w\/xZ6947sEG3lbdCX3L8rvDa1aukZDigmFdRRKIcnJQ4a9a0n4Ahov5JesEV6QcJPHdENtlnqG46D9fC6haUbA9dVUt1e9tpztkS+EEf0YnCN0TlnH7eeoy3M5hUsxRbZGq88\/pL\/1x6vW7cDdBHjGsftHZvb5Dq5wmtTqz5YD174LD1hXMayJ\/iPgGNUMroBkV7SAdlNboM3Q5C3zSUHE6DX3kWPPvf6dAYcq5LslUm5V5b8ZjfRK4jt5DKKxdE5x\/ZLsXAE9KOSs15BL7aOxutSnJLXHK+jOCU5XgGTSK89krfptX+F16aWVz6F6nGPbkAVVAcEgQMEZSX2+usT5+jmcRR7dbze2WtTq5Z+FpwwnDg1dwo2Rbv45KQI4qd7RbJRtOt4dbze2WtTq5Z+FxTBhjZRcCKrwE2s+lMzp9xLjzKO8mSvfERS\/akRPNmr4\/X+XptatfS78NRxq7FXDfaqwV41ZK9N7anSHWwa7FWDvWqwVw3Za1N7qnQHmwZ71WCvGuxVQ\/ba1FTS0e7WZ9vxOShK\/sKMzx4rqW7P\/MJeNdirBnvVkL02NYV0vA0Rv0TDMVByMuEXr0g6ESah+AUX2qt8y0IxbmOvKuxVg71qyF6bWrX0PCtBAuFbF0gcMRkhCeWEQ5BgcpJBu1tnT2s42DTYqwZ71WCvGrLXplYtHYkiJpI4u8HMhYlk7XU9rM8JBu1WzXYcbBrsVYO9arBXDdlrU6uUzsdlMVnE9mPSwYxn7x87rSWqPVSO2\/zBXjXYqwZ71ZC9NrVK6XiMhvZiUhjNdDBr2Zt0mNQq\/kjKwabBXjXYqwZ71ZC9NrVK6Zi95PZG3+kcSToA7cfvhY7iYNNgrxrsVYO9ashem1ql9F7SAViGEpPMaNs1sI+TzrzYqwZ71WCvGrLXplYpfU8i2fIiAdbnlwmwzElnXuxVg71qsFcN2WtTq5S+94v+\/KZbBOvy4zd+p5MT0REcbBrsVYO9arBXDdlrU6uUvveLfm6fX4NGHctzcuGLChVUjtv8wV412KsGe9WQvTa1aulLs5cRmNGgHyyjFwzQbk5QR6ket\/mFvWqwVw32qiF7bWrV0vmITQHarXi0BhxsGuxVg71qsFcN2WtTU0jHbKTiy\/4I2qua5QAHmwZ71WCvGuxVQ\/ba1BTSK7\/wB5w9bX1BYQsONg32qsFeNdirhuy1qWGli4uLi4tLZYn8J+nMBmc2lY\/TMjOO+zVgrxrsVYO9ashem9qM0hXfCWUcbBrsVYO9arBXDdlrU5tReuV3NyMcbBrsVYO9arBXDdlrU7tCOv95nFhGMxlue+QfA90DjmHqsVcN9qrBXjVkr01NLR1\/0Nk7BpblPyLldzn4iaSz949M96Ae91OxVw32qsFeNWSvTU0pfenV6d7\/vZO3q\/h\/c0Y42DTYqwZ71WCvGrLXpqaUzqSzNXnkx3BOOvfDXjXYqwZ71ZC9NjW1dP67amuvP\/MxHGc+TFiqt9jU434q9qrBXjXYq4bstaldIR3HyCU+VhvNiDjzUaBq9+nYqwZ71WCvGrLXpnaldL4owMLZT+\/7HcBk1PtO6Cxo19RjrxrsVYO9ashem9pLSefjNCQUJ53Xg71qsFcN9qohe21qLyU9PlIbJR3OjJ6YdD5\/\/vyzj72i+p6rAvRvRhhjI96+fds4jmUGZunHEl+\/fv3x\/v37\/3vDB8vv37\/\/Xjsnd\/Aa+euvv27R59zHpqYcwNp3MliHhBITUOTJ3+lwJggHuSiScBUzemXCGfWN8cd\/fimXGZjRawSe0Ee8OITfGb9IQjMzu9cIkjr6e4c+5z42NeUAeDH3\/nUBBGV8o41BytkO91Vd9MpxV4CLde2NvxmZyeu3b99+OkSfWHrwYnYyP0ZM2nFmw0SUP0zOxMxeI\/CK2Thn5LOT+9jUrhhAvvBResmEQcqiDFa0PzPo38ePH3\/X7sNMXhlHiD+4HPWNcTfzo6CZvGbolh8YCXxiOT5QzsrMXiOIYXwQXYrjmch9bGp3kV7NzOPmd1kIMD7DxSccXLx+Rr4dzLD5wYWJpQcuaD4W4t+V4QLHDGgWZvKa4Q3xjszslfD7Xczcl+J4JnIfm9odBqBg5nHHlwiQaBBonC3ipuhP5PtZulj5yIKJB8mey3AuZmBWrwB9Q3zipsgPSSiI3Tz7mY2ZvQL4QywiLoGTzo2ZedxMOvmTNpf7ccV+RhcrEjiSDW6aMZlzOfaZ4cY5q1eAvsEVbo7wCNeIUSzHMn9IOk6eRTrp3Ji7jhsXMcqszOr1yMXKJD\/DbGfmeEXfUOA4wrcG\/SHpGIxZzCCJk86Nueu4+ZhtVmbt25GLld+t5ZvpSzD7OR\/1DzMglFmZ1SsSTS\/2nHRuzOzjHj2ScNI5xtrF2vPtpLMNPobs4Xg9BuN1rcxK7ltTm6XjfNf\/qv7MfMJGj9BwY8Tymd8UmtXrKOksPULjPjO8xTZzvPLlgV7iRkJyvO4HH3gQf7kwibM+K9lrU5tNOoL0CpmzBhvgl7D5Rsjl\/mO7\/SCmen3jhx3EXbxp4vEGEvwsj4Zm9Qo4I8zf3TCh3+nmODujOJ6N3MemNuMArnhbaOYTxxkN+ogLGYHGTzj4OTOzel26WLmOH3jiK9O4oc7ArF4JPxAhPuGQdcxyejOgWZjda2Ypjmci97GpnR0AgouBhrZYMriguY774Gck7o\/CT\/T8JJVvADjm0U+iaG9mcKHCD29+vCHOzqxe1y5WPELDDRLboOCRUXxr6KWZ1WuE1yP6irhF\/M6ccMAdvEbW4ngWch+b2tkBILDQRkwgCLz4iTzX8XveB\/V4U+Xrlkw0aCNuD87ciM+O2\/SxVw32qsFeNWSvTe2sdCadCBMG4CwlPjLjc3QmkV725jZMKnmb0exnK\/l4pgZ71WCvGuxVQ\/ba1M5KR+LAjCMSkw6SRV4PejMXwGTCwqTDJMQkM2p3K+yfqcVeNdirBnvVkL02tbPSl5IOEkVvPcjf6WB7FuyfZzogJir8HtftBW2beuxVg71qsFcN2WtTOyt9LemMZiQx6fTa6CUdtpVnPUc4O27Tx1412KsGe9WQvTa1s9LXkg4fl+H3CJYx6SABxRcNAPeLSYfJBtv2Etke0I6px1412KsGe9WQvTa1s9LXkg7A+phU8DvWM+kgscTtAeooMekA7puX7wVtmHrsVYO9arBXDdlrUzsrfUvSAdgGy1C4D5MOYDJhwUynN6NhgjrzaA2gDVOPvWqwVw32qiF7bWovJR3J5MhsBfvkRHQEB5sGe9VgrxrsVUP22tTU0jnriTMTzlaOgP3Q5lnU434q9qrBXjXYq4bstalhpYuLi4uLS2WJOLUbY4y5DCcdY4wxl+GkY4wx5jKcdIwxxlzEjx\/\/A7lQxZ8Y8alxAAAAAElFTkSuQmCC\" y=\"0\"><\/image> <\/g> <\/svg><\/span><\/p><p>M\u1ed1t c\u1ee7a m\u1eabu s\u1ed1 li\u1ec7u ghép nhóm<\/p>","options":["<strong>A.<\/strong> 22,58 °C","<strong>B.<\/strong> 22,59 °C","<strong>C.<\/strong> 22,57 °C","<strong>D.<\/strong> 22,60 °C"],"correct":"1","level":"3","hint":"","answer":"<p>Nhóm 2 \u1ee9ng v\u1edbi n\u1eeda kho\u1ea3ng [21;24) có t\u1ea7n s\u1ed1 l\u1edbn nh\u1ea5t v\u1edbi <span class=\"math-tex\">$a_2=21$<\/span>, <span class=\"math-tex\">$h=3$<\/span>, <span class=\"math-tex\">$m_2-m_1=15-5=10$<\/span>, <span class=\"math-tex\">$m_2-m_3=15-6=9$<\/span> .<\/p><p>M\u1ed1t là <span class=\"math-tex\">$M_o=a_2+\\dfrac{m_2-m_1}{(m_2-m_1)+(m_2-m_3)}.h=21+\\dfrac{10}{10+9}.3 \\approx 22,58^0 C$<\/span> <\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"> <strong>A.<\/strong> 22,58 °C.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-12-21 02:27:21","option_type":"txt","len":1}]}