42,42,24,36,60,6

Find the sum of the differences squared between the data entries and the mean.

42,42,24,36,60,6

1st Find the mean X̅ = (42+42+24+36+60+6) / 6 = 35

2nd find the difference between the data set value and the mean (x - X̅)

and square them:

(42-35) ² = 49

(42-35) ² = 49

(24-35) ² = 121

(36-35) ² = 1

(60-35) ² = 625

(6-35) ² = 814

Now add up te result ∑ (x-X̅) ² = 1659