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How do you measure variability?
平方和
方差 平均值
Questioner:Liam Thompson 2023-06-17 09:46:32
The most authoritative answer in 2024
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Harper Lee——Studied at the University of Oxford, Lives in Oxford, UK.
In order to the find the variance, start by finding the mean for the final exam grades and then subtract the mean from each value in the data set. Then square each value and find the sum of the squares. To find the variance, divide the sum of the squares by 13. The variance for this data set is 103.51.
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