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匿名
匿名 發問於 科學及數學數學 · 7 年前

sample standard deviation

圖片參考:http://img443.imageshack.us/img443/8938/ins8.png

how to calculate the sample standard deviation?

Can someone help? It would be appreciated with detailed explanation . Thank you for your time and effort.

Thanks a lot!

更新:

the sample size of both city is 50

thanks!

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