Question

If the mean of the following data is 20.2. Find the number of p.
X= 10,15,20,25,30
F= 6, 8, p, 10 , 6

Answer 1

Answer:

10*6=60

15*8=120

20*p=20p

25*10=250

30*6=180

30+p=610+20p

610+20p/30+p=20.2

610+20p=20.2(30+p)

610+20p=606+20.2p

610-606=20.2p-20p

4=.2p=

p=20