2 standard deviation(sd)是2倍sd的意思吗,可以这样省略比较级?A list of numbers has a mean of a standard deviation of 2.5.If x is a number in the list that is 2 standard deviations above the mean,what is the value of 这是新GRE官
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![2 standard deviation(sd)是2倍sd的意思吗,可以这样省略比较级?A list of numbers has a mean of a standard deviation of 2.5.If x is a number in the list that is 2 standard deviations above the mean,what is the value of 这是新GRE官](/uploads/image/z/3956331-3-1.jpg?t=2+standard+deviation%EF%BC%88sd%EF%BC%89%E6%98%AF2%E5%80%8Dsd%E7%9A%84%E6%84%8F%E6%80%9D%E5%90%97%2C%E5%8F%AF%E4%BB%A5%E8%BF%99%E6%A0%B7%E7%9C%81%E7%95%A5%E6%AF%94%E8%BE%83%E7%BA%A7%3FA+list+of+numbers+has+a+mean+of+a+standard+deviation+of+2.5.If+x+is+a+number+in+the+list+that+is+2+standard+deviations+above+the+mean%2Cwhat+is+the+value+of+%E8%BF%99%E6%98%AF%E6%96%B0GRE%E5%AE%98)
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