题目列表(包括答案和解析)
A、50 | B、75 | C、100 | D、150 |
56.5 | 69.5 | 65 | 61.5 | 64.5 | 66.5 | 64 | 64.5 | 76 | 58.5 |
72 | 73.5 | 56 | 67 | 70 | 57.5 | 65.5 | 68 | 71 | 75 |
62 | 68.5 | 62.5 | 66 | 59.5 | 63.5 | 64.5 | 67.5 | 73 | 68 |
55 | 72 | 66.5 | 74 | 63 | 6. | 55.5 | 70 | 64.5 | 58 |
64 | 70.5 | 57 | 62.5 | 65 | 69 | 71.5 | 73 | 62 | 58 |
76 | 71 | 66 | 63.5 | 56 | 59.5 | 63.5 | 65 | 70 | 74.5 |
68.5 | 64 | 55.5 | 72.5 | 66.5 | 68 | 76 | 57.5 | 6. | 71.5 |
57 | 69.5 | 74 | 64.5 | 59 | 61.5 | 67 | 68 | 63.5 | 58 |
59 | 65.5 | 62.5 | 69.5 | 72 | 64.5 | 75.5 | 68.5 | 64 | 62 |
65.5 | 58.5 | 67.5 | 70.5 | 65 | 66 | 66.5 | 70 | 63 | 59.5 |
试根据上述数据画出样本的频率分布直方图,并对相应的总体分布作出估计。
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