组别 | 均值 | CV值(除去最大与最小的5%后) | RIV |
1 | 71,952 | 0.537 | 0.286 |
2 | 142,087 | 0.482 | |
3 | 197,565 | 0.398 | |
4 | 248,279 | 0.441 | |
5 | 375,758 | 0.402 |