Question

The class-width of the intervals in the given grouped frequency disribution table is:

Class interval	Frequency
0-10	2
10-20	10
20-30	21
30-40	19
40-50	7
50-60	1
Total	60

• A. 5
• B. 7
• C. 9
• D. 10

Answer 1

The correct option is D 10

The class-width of an interval is the difference between its upper class limit and lower class limit.
Thus, the class-width of the intervals in the given grouped frequency distribution table is 10.