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18  期望值的实质是以( )为权数的各方案实施后的各种可能性出现结果的加权平均。

多选题
2021-09-03 17:27
A、各方案占用资金比
B、各方案产出比
C、概率
D、各方案利润比
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正确答案
B@#@C

试题解析

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