Question

then find the x vale?

Answer 1

mean = sum of all observations / Number of observations

11 = x + x + 2 + x +4 + x +6 + x+8

11 = 5x + 20 / 5

55 = 5x + 20

55- 20 = 5x

35 = 5x

x = 35/5

x = 7

Answer 2

here give mean 5

{x+(x+2)+(x+4)+(x+6)+(x+8)}/5= 11

5x+20= 55

5x=35

x=7

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