Question

while finding Arithmetic mean for 50 scores of an ungrouped frequency distribution it was given that sigma fi.xi = 755. find the mean of the scores

Answer 1

no of scores = 50
sigma fi.xi = 755
mean of scores = 755/50
mean = 15.1
here's the answer
hope it helps

Answer 2

heya...!!!!

given that:-

 Σfi×xi = 755

and
Sum of all of the numbers of a group = 50

now,

arithmetic mean = 755/50

=> 15.1