${\overline{V}}_n$

${\overline{V}}_{N,1}$

${\overline{V}}_{N,2}$

${\overline{V}}_{N,3}$

价格

48,524.25

47,681.88

47,457.38

47,699.30

方差

12,4881.7

78,737.35

88,824.79

42,680.49