vault backup: 2023-12-18 14:09:40

education/statistics/Correlation and Regression.md

@@ -95,6 +95,7 @@ $$ \hat{y} = \frac{x-\bar{x}}{\sigma_x} * r * \sigma_y + \bar{y} $$
 3. Multiply that by $\sigma_y$
 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
 | Term | Definition |