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  • Can variance be a negative number?

    方差 偏差 都是

    Questioner:Julian Perez 2023-06-17 09:46:35
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  • Isabella Lee——Studied at the University of Cambridge, Lives in Cambridge, UK.

    Because the squared deviations are all positive numbers or zeroes, their smallest possible mean is zero. It can't be negative. This average of the squared deviations is in fact variance. Therefore variance can't be negative.read more >>
    +119962023-06-26 09:46:35

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