Question

a professor had students keep track of their social interactions for a week. the number of social
interactions over the week is shown in the following grouped frequency distribution. what is the
class width?
the class width is
( type a whole number.)
number of social
interactions
frequencies
40 - 45
5
46 - 57
20
58 - 69
14
70 - 75
19
76 - 84
0
85 - 93
7
94 - 102
4
103 - 111
1
112 - 120
1
121 - 129
1

Explanation:

Step1: Find the class width formula

Class width = Upper - lower limit of a class.

Step2: Calculate class width

Take the first class \(40 - 45\). Upper limit \(= 45\), lower limit \(= 40\).
Class width \(=45 - 40=5\).

Answer:

\(5\)