Question

What is the standard deviation of the data set?

14 34 23 50 25 16 48

a. about 35.6

b. about 26.8

c. about 14.5

d. about 13.4

Answer 1

The Standard Deviation is a measure of how spread out numbers are. Standard deviation can be calculated by the expression as follows:

s = √∑(x - x(mean))^2/n-1

x(mean) = 210 / 7 = 30

s = √∑(x - 30)^2 / 7-1
s = 14.53 <------ OPTION C