Chapter SH, Problem 10.7EP

To determine

To find the standard deviation.

Answer to Problem 10.7EP

SD of data is 15.72.

Explanation of Solution

Given information:

Data: 110, 123, 147, 119, 153, 142, 113, 143

Formula used:

  

  

  is mean

n is number of frequencies

Calculation:

  

  

  

  

Substituting value of sum of x_iand n in the mean formula

  

On solving,

mean=131.5

Substituting values of and n in the standard deviation formula

  

On solving,

SD=15.72

Hence, SD of data is 15.72.