Answer:
20
Step-by-step explanation:
From the above question, we were given the following information:
Number of Guests = Frequency
100 – 119 = 45
120 – 139 = 76
140 – 159 = 56
160 – 179 = 17
180 – 199 = 27
Class width can be defined as :
The difference between the upper limits of two consecutive classes, or the difference between the lower limits of two consecutive classes.
The class width for this GFDT : 139 - 119
= 20