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education/statistics/Correlation and Regression.md
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@ -95,6 +95,7 @@ $$ \hat{y} = \frac{x-\bar{x}}{\sigma_x} * r * \sigma_y + \bar{y} $$
3. Multiply that by $\sigma_y$ 3. Multiply that by $\sigma_y$
4. Add the average of $y$ 4. Add the average of $y$
- For a positive association, for every $\sigma_x$ above average we are in $x$, the line predicts $y$ to be $\sigma_y$ standard deviations above y.
# Terminology # Terminology
| Term | Definition | | Term | Definition |