Question

The mean of 5 observation x,x+2,x+4,x+6andx+8 is 11. Then find the value of x

Answer 1

x+x+2+x+4+x+6+x+8,when this value is divided by 5 then the answer is 11.

It means that (x+x+2+x+4+x+6+x+8)/5=11

therefore,5x+20=55

5x=55-20

x=35/5

x=7

the value of x will be 7.