Find the standard deviation:

Question

Find the standard deviation of these numbers: 5, 3, 20, 8, 10, 8

(A) 15

(B) 5.42

(C) 5.51

(D) 2

(E) None of the above

For this I got; (B) 5.42. Is this correct?

Answer 1

Yes, that is what I got as well. Nice job!

For reference, the mean of the numbers is 9, the count is 6, and the sum of the deviations is (-4²+-6²+11²+-1²+1²+-1²) = 176

The equation is

	=	population standard deviation
	=	the size of the population
	=	each value from the population
	=	the population mean