Question

Fill in the blanks so as to make each
of the following statements true :
( 1 ) If the mean of 6, 7, X, 8, y, 14 is 9,
then x + y2​

Answer 1

Mean = sum of observation/ number of observations
9 = (6+7+x+8+y+14)/6
54 = 35 + x + y
So, x + y = 19