Average points scored per game were found for a sample size of 90 for 2010 NBA basketball players and classified as follows:
Average points scored per game Cumulative frequency0-6.........................................186-12......................6312-18.......................8118-24.......................90
1. What is the standard deviation of the points per game for this sample?
a) 5.23
b) 5.26
c) 27.36
d) 27.67
e) 272.92