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Find the mean and variance for the data 6, 7, 10, 12, 13, 4, 8, 12
6, 7, 10, 12, 13, 4, 8, 12
Mean,
The following table is obtained.
xi | ||
6 | –3 | 9 |
7 | –2 | 4 |
10 | –1 | 1 |
12 | 3 | 9 |
13 | 4 | 16 |
4 | –5 | 25 |
8 | –1 | 1 |
12 | 3 | 9 |
74 |
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