习题2.5
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4.77 |
3.37 |
6.14 |
3.95 |
3.56 |
4.23 |
4.31 |
4.71 |
5.69 |
4.12 |
|
4.56 |
4.37 |
5.39 |
6.3 |
5.21 |
7.22 |
5.54 |
3.93 |
5.21 |
6.51 |
|
5.18 |
5.77 |
4.79 |
5.12 |
5.2 |
5.1 |
4.7 |
4.74 |
3.5 |
4.69 |
|
4.38 |
4.89 |
6.25 |
5.32 |
4.5 |
4.63 |
3.61 |
4.44 |
4.43 |
4.25 |
|
4.03 |
5.85 |
4.09 |
3.35 |
4.08 |
4.79 |
5.3 |
4.97 |
3.18 |
3.97 |
|
5.16 |
5.1 |
5.85 |
4.79 |
5.34 |
4.24 |
4.32 |
4.77 |
6.36 |
6.38 |
|
4.88 |
5.55 |
3.04 |
4.55 |
3.35 |
4.387 |
4.17 |
5.85 |
5.16 |
5.09 |
|
4.52 |
4.38 |
4.31 |
4.58 |
5.72 |
6.55 |
4.376 |
4.61 |
4.17 |
4.03 |
|
4.47 |
3.4 |
3.91 |
2.7 |
4.6 |
4.09 |
5.96 |
5.48 |
4.4 |
4.55 |
|
5.38 |
3.89 |
4.6 |
4.47 |
3.64 |
4.34 |
5.18 |
6.14 |
3.24 |
4.9 |
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样本次数分布表: |
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组中值 |
样本数 |
理论值 |
比例% |
累计次数: |
累计比例% |
|
|
2.9258 |
2 |
2.3249 |
2.0000 |
2 |
2.0000 |
|
|
3.3780 |
8 |
6.0491 |
8.0000 |
10 |
10.0000 |
|
|
3.8300 |
9 |
11.9916 |
9.0000 |
19 |
19.0000 |
|
|
4.2820 |
22 |
18.1048 |
22.0000 |
41 |
41.0000 |
|
|
4.7340 |
23 |
20.8182 |
23.0000 |
64 |
64.0000 |
|
|
5.1860 |
17 |
18.2317 |
17.0000 |
81 |
81.0000 |
|
|
5.6380 |
9 |
12.1604 |
9.0000 |
90 |
90.0000 |
|
|
6.0900 |
5 |
6.1773 |
5.0000 |
95 |
95.0000 |
|
|
6.5420 |
4 |
2.3899 |
4.0000 |
99 |
99.0000 |
|
|
6.9945 |
1 |
0.7047 |
1.0000 |
100 |
100.0000 |
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分析：从表中得组中值4.7340样本数最多，理论值最大，占比例最大，累计次数也是最多，其两侧 递减，符合正态分布。
习题2.9
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|
平均数 |
标准差 |
变异系数 |
|
单养 |
42.7000 |
7.0776 |
16.58% |
|
混养 |
52.1000 |
6.3350 |
12.16% |
分析：上表可得混养平均数大于单养，混养产量大于单养，混养变异系数小于单养，所以混养的整齐度高。
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