The mid-value of a class interval is 42 and the class size is 10. The lower and upper limits are :
A. 37 - 47
B. 37.5 - 47.5
C. 36.5 - 47.5
D. 36.5 - 46.5
Answer:A
The mid-value of a class interval is 42 and the class size is 10. The lower and upper limits are :
A. 37 - 47 B. 37.5 - 47.5 C. 36.5 - 47.5 D. 36.5 - 46.5