Answer:
The class width of this grouped frequency distribution (GFDT) = 5.
The total width of the distribution = 25, that is, from 60 to 84.
Step-by-step explanation:
The class width of a GFDT (grouped frequency distribution) is obtained by dividing the range by the number of classes required and then rounding up.
Note that rounding up is different from rounding off as 4.2 is rounded up to 5 and rounded off to 4.
The class width is the span of each of the class in the grouped frequency distribution.
For this distribution,
Maximum value = 84
Minimum value = 60
Range = (Maximum value) - (Minimum value) = 84 - 60 = 24
Number of classes required = 5
Class width = (24/5) = 4.8 = 5 (rounded up).
The total width of the distribution is given as
Total width = Range + 1 = 24 + 1 = 25.
Hope this Helps!!!
