if the mean of 7, 9, X + 3, 12, 2 x - 1 and 3 is 9 find the value of x
Answers
Answered by
2
Total no. Of observations = 6
Sum of all observations =>
=> 7+9+x+3+12+2x-1+3
=> 3x+30
Mean = SUM/TOTAL NO.
3x+30/6= 9
3x + 30 = 54
X= 24/3
X=8
Sum of all observations =>
=> 7+9+x+3+12+2x-1+3
=> 3x+30
Mean = SUM/TOTAL NO.
3x+30/6= 9
3x + 30 = 54
X= 24/3
X=8
Similar questions