Sturges' guideline suggests that when constructing a frequency distribution, the ideal number of classes can be approximated by $1 + ( \log n ) / ( \log 2 )$ where n is the number of data values. Use this
Guideline to find the ideal number of classes when the number of data values is 180.
A) 7
B) 10
C) 8
D) 9

Question

Quizplus · Accepted Answer

The ideal number of classes is 8.Sturges' guideline suggests that the ideal number of classes can be approximated by $1 + ( \log n ) / ( \log 2 )$ where n is the number of data values.When the number of data values is 180, the ideal number of classes is $1 + ( \log 180 ) / ( \log 2 )$ = $1 + ( 2.255 ) / ( 0.301 )$ = $1 + 7.49$ = 8.

Sturges' Guideline Suggests That When Constructing a Frequency Distribution, the Ideal