Question

If the means of,x+2,x+4,x+6 and x+ 8 is 11 find the value of x​

Answer 1

Mean of given observations = Sum of given observations Total number of observations

∴11=x+(x+2)+(x+4)+(x+6)+(x+8)÷5

⇒55=5x+20

5x=55-20

5x=35

x=35/5

x=7

Hence, the value of x is 7.