What is the standard deviation of the data set given below? 5, 7, 9, 11, 13 a. 3 b. square root of 8 c. square root of 10 d. square root of 3 e. 8 f. 10

First, we find the mean (average) of ur numbers
(5 + 7 + 9 + 11 + 13) / 5 = 45/5 = 9

then subtract the mean from every data point...and square it
5 - 9 = -4-4^2 = 16
7 - 9 = -2-2^2 = 4
9 - 9 = 00^2 = 0
11 - 9 = 22^2 = 4
13 - 9 = 44^2 = 16

now we find the mean (average) of these numbers
(16 + 4 + 0 + 4 + 16) / 5 = 40/5 = 8

now to find the standard deviation, we take the square root of that..
sqrt 8 is ur standard deviation <

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