find the mean of the frequency distribution of 80 candidate is given below i.q. 70-80 , 80-90, 90-100 , 100- 120, 120-130, 130-140; no of candidate 7, 16 ,20,17,11,7,2 respectively by assumed mean method
Answers
Answered by
2
find out the class mark (x),then multiply the class mark with the frequency(fx)
mean =fx÷x.
mean =fx÷x.
siddhant1231:
but I have to find it by assume mean method
Similar questions