If the middle point of a class interval is 60 and the lower limit is 45, then the upper limit would be:
A. 75
B. 55
C. 60
D. 70
Answer:A
If the middle point of a class interval is 60 and the lower limit is 45, then the upper limit would be:
A. 75 B. 55 C. 60 D. 70