Find the mean of the following data is 20.6. Find the value of p.


x



f



fx



10



3



30



15



10



150



P



25



25P



25



7



175



35



5



175




N = 50



∑fx = 25P + 530



It is given that,


Mean = 20.6


= 20.6


= 20.6


= 1030



25P = 500


P = = 20


Therefore, P = 20


3