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 148.
A) 10
B) 7
C) 9
D) 8

Question

Quizplus · Accepted Answer

Using Sturges' guideline: 
number of classes = 1 + (log 148)/(log 2)
= 1 + 7.18
= 8.18 (approximated to the nearest integer)
Therefore, the ideal number of classes is 8, which is closest to answer choice D.

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