Calculate the mean for the following distribution:


x :



5



6



7



8



9



f :



4



8



14



11



3



X



f



fx



5



4



20



6



8



48



7



14



98



8



11



88



9



3



27




N = 40



∑fx = 281




Therefore, Mean (
) =


=


= 7.025


1