Use the following information to answer the Questions:
Below are the numbers of pages in each of seven chapters of a textbook.
14, 14, 20, 38, 47, 48, 57
-What is the standard deviation?
A) 18.52
B) 18
C) 17.82
D) 17.67

Question

Quizplus · Accepted Answer

1. Calculate the mean: (14+14+20+38+47+48+57)/7 = 32.14
2. Calculate the deviation of each value from the mean:
-18.14, -18.14, -12.14, 5.86, 14.86, 15.86, 24.86
3. Square each deviation: 
329.61, 329.61, 147.46, 34.28, 221.38, 251.14, 617.10
4. Sum the squared deviations: 1929.58
5. Divide by sample size minus 1 and take the square root: sqrt(1929.58/6) = 17.82, rounded to two decimal places.

Use the Following Information to Answer the Questions