Question

If the mean of the five observation x, x+2, x+4, x+6, x+8 is 13,then find the value of x.

Answer 1

Mean = Sum of observations/Total no of observation
=> 13 = x + x +2 + x + 4 + x + 6 + x + 8/5
=> 5x + 20/5 = 13
=> 5x + 20 = 65
=> 5x = 45
=> x = 9.

Answer 2

Answer:

x+x+2+x+4+x+6+x+8/5 = 13

5x+20/5 =13

5x+20 = 65

5x = 65-20

5x = 45

x = 45÷5 = 9

The value of x is 9

Step-by-step explanation:

hope it helps.........