Question

What is the standard deviation of the following data? If necessary, round your answer to two decimal places. 82, 44, 67, 52, 120

Answer 1

 Number of values = 5 (There are 5 values given) 

Mean = (82 + 44 + 67 + 52 + 120)/5 = 73 

Variance = (1/5) [(82-73)^2 + (44-73)^2 + (67-73)^2 + (52-73)^2 + (120-73)^2] = 721.6 

Standard deviation = sqrt (721.6) = 26.86