题目列表(包括答案和解析)
| 分组编号 | 分组 | 频率 |
| 1 | 145.5~148.5 | 0.02 |
| 2 | 148.5~151.5 | 0.04 |
| 3 | 151.5~154.5 | 0.08 |
| 4 | 154.5~157.5 | 0.12 |
| 5 | 157.5~160.5 | 0.30 |
| 6 | 160.5~163.5 | |
| 7 | 163.5~166.5 | 0.18 |
| 8 | 166.5~169.5 | 0.06 |
| 分组编号 | 分组 | 频率 |
| 1 | 145.5~148.5 | 0.02 |
| 2 | 148.5~151.5 | 0.04 |
| 3 | 151.5~154.5 | 0.08 |
| 4 | 154.5~157.5 | 0.12 |
| 5 | 157.5~160.5 | 0.30 |
| 6 | 160.5~163.5 | |
| 7 | 163.5~166.5 | 0.18 |
| 8 | 166.5~169.5 | 0.06 |
| 分组编号 | 分组 | 频率 |
| 1 | 145.5~148.5 | 0.02 |
| 2 | 148.5~151.5 | 0.04 |
| 3 | 151.5~154.5 | 0.08 |
| 4 | 154.5~157.5 | 0.12 |
| 5 | 157.5~160.5 | 0.30 |
| 6 | 160.5~163.5 | |
| 7 | 163.5~166.5 | 0.18 |
| 8 | 166.5~169.5 | 0.06 |
| 分组编号 | 分组 | 频率 |
| 1 | 145.5~148.5 | 0.02 |
| 2 | 148.5~151.5 | 0.04 |
| 3 | 151.5~154.5 | 0.08 |
| 4 | 154.5~157.5 | 0.12 |
| 5 | 157.5~160.5 | 0.30 |
| 6 | 160.5~163.5 | |
| 7 | 163.5~166.5 | 0.18 |
| 8 | 166.5~169.5 | 0.06 |
| 分组编号 | 分组 | 频率 |
| 1 | 145.5~148.5 | 0.02 |
| 2 | 148.5~151.5 | 0.04 |
| 3 | 151.5~154.5 | 0.08 |
| 4 | 154.5~157.5 | 0.12 |
| 5 | 157.5~160.5 | 0.30 |
| 6 | 160.5~163.5 | 0.20 |
| 7 | 163.5~166.5 | 0.18 |
| 8 | 166.5~169.5 | 0.06 |
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