Question

The mean of the set of numbers 6,3,x,4,3,5,y is given by 5. Find the value of x+y

Answer 1

(6+3+x+4+3+5+y)/7=5
(21+x+y)/7=5
21+x+y=5*7
x+y=35-21
x+y=14

Answer 2

Answer: Mean = Sum of all observation / No. of observation

5 = ( 6+3+x+4+3+5+y )/7

5 = ( 21+x+y )/7

5 *7 = ( 21+x+y )

35 = ( 21+x+y )

35-21 = x+y

14 = x+y :Ans