While computing mean of grouped data, we assume that the frequencies are
A. centred at the upper limits of the classes
B. centred at the lower limits of the classes
C. centred at the classmarks of the classes
D. evenly distributed over all the classes
Answer:C
While computing mean of grouped data, we assume that the frequencies are
A. centred at the upper limits of the classes B. centred at the lower limits of the classes C. centred at the classmarks of the classes D. evenly distributed over all the classes