Homework Answers
Answer : Standard deviation = 4.779
| Year | R1 | D1 = R1 - R1 | D1^2 |
| 1 | 2 | 3 | 4 |
| 2013 | 9.74 | 1.678 | 2.815684 |
| 2014 | 2.74 | -5.322 | 28.32368 |
| 2015 | 15.06 | 6.998 | 48.972 |
| 2016 | 4.708 | -3.354 | 11.24932 |
| 32.248 | 91.36069 |
| Mean | R1/n | 8.062 |
| Variance | D1^2/n | 22.84017 |
| SD | Square root of Variance | 4.779 |
| R1 | 32.248 |
| D1^2 | 91.361 |
| n | 4 |
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