if the mean of 7, 9, 11, 13, x and 21 is 13 find the value of x.
Dear student
Sum of observations = 7 + 9 + 11 + 13 + 21 + x = 61 + x
no. of observations = 6
arithmetic mean = 13
Regards
Sum of observations = 7 + 9 + 11 + 13 + 21 + x = 61 + x
no. of observations = 6
arithmetic mean = 13
Regards