find the sample variance for the data set: 6.9 7.2 8.1 7.9 8.1 7.2 7.3
Homework Answers
| x |  |
 |
|
| 1 | 6.9 | -0.629 | 0.395 |
| 2 | 7.2 | -0.329 | 0.108 |
| 3 | 8.1 | 0.571 | 0.327 |
| 4 | 7.9 | 0.371 | 0.138 |
| 5 | 8.1 | 0.571 | 0.327 |
| 6 | 7.2 | -0.329 | 0.108 |
| 7 | 7.3 | -0.229 | 0.052 |
| Total | 52.7 | 0 | 1.454 |
| Mean | 7.529 |
Sample variance = 
= 1.454 / 6
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find the sample variance for the data set: 6.9 7.2 8.1 7.9 8.1 7.2
7.3
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