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【判断题】
(2)在计算标准差的时候,如果对各个观测值加上或者减去一个常数a,其标准差不变;如果乘以或除以一个常数a,则标准差扩大或者缩小a倍( )
A.
正确
B.
错误
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Taq DNA聚合酶
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查看完整题目与答案
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