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


x:



10



15



p



25



35



y:



3



10



25



7



5



X



y



yx



10



3



30



15



10



150



P



25



25p



25



7



175



35



5



175




N = 50



yx = 530 + 25p



Given,


Mean = 20.6


= 20.6


= 20.6


530 + 25p = 20.6 (50)


25p = 20.6 (50) – 530


p = = 20


3