F.5 standard deviation(3)
2010-12-26 9:14 am
For a set of nine data, the mean and standard deviation are 10 and 4 respectively. When seven data '10' are added, find the mean and standard deviation of the new set of data.
回答 (1)
2010-12-26 6:47 pm
收錄日期: 2021-04-13 17:43:51
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https://hk.answers.yahoo.com/question/index?qid=20101226000051KK00125