Question

1

If the mean of five observations x, X + 2, x + 4, X + 6, X + 8 is 11. Find the mean of 1st three
observations
swered

Answer 1

x+2

Explanation:

The firs 3 observations are x, x+2, x+4

Mean = sum of data/samaple size

Mean = x+x+2+x+4/3

MEan = 3x+6/3

Mean = 3(x+2)/3

Mean = x+2

Hence the required mean is x+2