0
\(\sqrt{\frac{2}{3}}\)
\(\frac{2}{3}\)
2
Correct answer is C
| x | (x - \(\bar{x}\)) | (x - \(\bar{x}\)) |
|
\(\sqrt{2}\) 1 + \(\sqrt{2}\) 2 + \(\sqrt{2}\) |
-1 0 1 |
1 0 1 \(\overline{2}\) |
variance = \(\frac{\sum(x - \bar{x})^2}{n}\)
= \(\frac{2}{3}\)
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