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A.容量,方差 | B.平均数,容量 |
C.容量,平均数 | D.标准差,平均数 |
A.甲、乙波动大小一样 |
B.乙的波动比甲的波动大 |
C.甲的波动比乙的波动大 |
D.甲、乙的波动大小无法比较 |