3. Find the mean and variance for each of the data
First 10 multiples of 3
First 10 multiples of 3 are:
3, 6, 9, 12, 15, 18, 21, 24, 27, 30
Mean () of the above values:
The respective values of the deviations from mean, are
-13.5, -10.5, -7.5, -4.5, -1.5, 1.5, 4.5, 7.5, 10.5, 13.5
Hence, Mean = 16.5 and Variance = 74.25