MCQ
$\operatorname{Corr}\left(\frac{x-a}{c}, \frac{y-b}{d}\right)=-\operatorname{corr}(\mathrm{x}, \mathrm{y})$ if,
- ✓c and d are opposite in sign
- Bc and d are same in sign
- Ca and b are opposite in sign
- Da and b are same in sign
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| $x_i$ | -2 | -1 | 0 | 1 | 2 |
| $p_i$ | 0.2 | 0.3 | 0.15 | 0.25 | 0.1 |