求方差题甲70,65,80,74,65,71,69,66已61.78.60.75.79.65.62.80
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求方差题
甲70,65,80,74,65,71,69,66
已61.78.60.75.79.65.62.80
甲70,65,80,74,65,71,69,66
已61.78.60.75.79.65.62.80
![求方差题甲70,65,80,74,65,71,69,66已61.78.60.75.79.65.62.80](/uploads/image/z/15491164-4-4.jpg?t=%E6%B1%82%E6%96%B9%E5%B7%AE%E9%A2%98%E7%94%B270%2C65%2C80%2C74%2C65%2C71%2C69%2C66%E5%B7%B261.78.60.75.79.65.62.80)
甲:23的0.5次方
乙:67.5的0.5次方
乙:67.5的0.5次方