Question

11+15+17+y+1+19+y-2+3 if mean =14 find vue of y

Answer 1

observation are 11,15,17,Y,1,19,Y,-2,3

MEAN = SUM OF OBSERVATION / NUMBER OF OBSERVATION

14 = 11+15+17+Y+1+19-2+3/9

2Y + 45/9 = 14

2Y+64 = 14×9

2Y+64 = 126

2Y = 126-64

2Y = 62

Y = 62/2 = 31