平均值=8
方差=2.5
x是平均值+2個方差
x=8+2*2.5=13
沒讀明白
沒讀明白
A list of numbers has a mean of 8 and a standard deviation of 2.5.If x is a number in the list that is 2 standard deviation above the mean,what is the value of 單詞沒問題但題沒看懂,
A list of numbers has a mean of 8 and a standard deviation of 2.5.If x is a number in the list that is 2 standard deviation above the mean,what is the value of 單詞沒問題但題沒看懂,
英語人氣：169 ℃時間：2020-04-11 19:06:49
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