Find the class width for the grouped frequency distribution of the class intervals 1-20, 21-40, 41-60, ..
A. 10
B. 15
C. 17
D. 20
Answer:D
Find the class width for the grouped frequency distribution of the class intervals 1-20, 21-40, 41-60, ..
A. 10 B. 15 C. 17 D. 20