| 样本数 | 平均值 | 标准差 | 方差 |
lllll | 44 | 475.2975 | 45.29359 | 2051.509 |
llrll | 44 | 544.7841 | 49.19582 | 2420.229 |
rrlrr | 44 | 553.9270 | 49.95618 | 2495.620 |
rrrrr | 44 | 459.8559 | 37.81362 | 1429.869 |