527
407
327
277
Correct answer is A
Mean, ˉx=1+2+0+(−3)+5+(−2)+47=77=1
| x | (x−ˉx) | (x−ˉx)2 |
| 1 | 0 | 0 |
| 2 | 1 | 1 |
| 0 | -1 | 1 |
| -3 | -4 | 16 |
| 5 | 4 | 16 |
| -2 | -3 | 9 |
| 4 | 3 | 9 |
| Total (n) = 7 |
52 |
Variance = \frac{\sum (x - \bar{x)^{2}}{n}
= 527
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