Variance and Standard Deviation Questions - Web Maths
Find the mean and the standard deviation of the combined set of 25 numbers. 5. The number of members (m) in six scout groups was recorded. The summary statistics for these data are: Σm = 150 Σm2 = 3846. a. Work out the mean number of members in a scout group. b. Work out the standard deviation of the number of members in the scout groups. 6. ................
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