Question

How do you find the standard deviation for 11, 12, 14, 14, 14, 14, 19?

Answer 1

Find the mean `mu` of the set.

`mu={11+12+14+14+14+14+19}/7=14`

Standard deviation `sigma` can be found by

`sigma=sqrt{{(11-14)^2+(12-14)^2+(14-14)^2+(14-14)^2+(14-14)^2+(14-14)^2+(19-14)^2}/7}approx 2.33`

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I hope that this was helpful.