The mid-point of a class-interval is equal to
A. Average of upper limit and lower limit
B. Multiple of upper limit and lower limit
C. Ratio of upper limit and lower limit
D. None of these
Answer:A
The mid-point of a class-interval is equal to
A. Average of upper limit and lower limit B. Multiple of upper limit and lower limit C. Ratio of upper limit and lower limit D. None of these