Question

find the mean of following data 12,15,35,28,105

Answer 1

Mean = 12+15+35+28+105 / 5
195/5
39

Answer 2

Observations are 12,15,35,28,105

Mean = Sum of observations / Numbers of observations.

Mean = 12+15+35+28+105/5 = 195/5 = 39