Asked by Lucy

Find the standard deviation of the data set to the nearest tenth:
(21, 13, 18, 16, 13, 35, 12, 8, 15)

Answer: 16.8

thanks
Answered by FredR
The mean of the given numbers is 16.8.

SD=sqrt(1/N sum((x-mean)^2))
=sqrt(1/9*((21-16.8)^2+(13-16.8)^2...
=7.3
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