销量概率
00.18
10.37
20.24
30.14
40.04
50.02
60.01
销量
概率
销量乘概率离差平方乘积
00.1810.3720.2430.1440.0450.026
0.01合计1期望1.59方差1.5619标准差
1.24976
00.4550580.370.1287970.480.0403440.420.2783340.160.2323240.10.2325620.060.1944811.591.5619
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