甲:500,499,500,500,503,498,497,502,500,501;
乙:499,502,498,501,499,501,499,499,500,502.
种类 |
平均数 |
中位数 |
众数 |
方差 |
甲 |
500 |
500 |
|
|
乙 |
500 |
|
499 |
1.8 |