From 01260becd722adb21c53f94fdf708f53addda645 Mon Sep 17 00:00:00 2001 From: zleyyij Date: Mon, 18 Dec 2023 14:24:40 -0700 Subject: [PATCH] vault backup: 2023-12-18 14:24:40 --- education/statistics/Correlation and Regression.md | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/education/statistics/Correlation and Regression.md b/education/statistics/Correlation and Regression.md index fa165f9..fe9f94e 100644 --- a/education/statistics/Correlation and Regression.md +++ b/education/statistics/Correlation and Regression.md @@ -96,8 +96,12 @@ $$ \hat{y} = \frac{x-\bar{x}}{\sigma_x} * r * \sigma_y + \bar{y} $$ 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.x +- Being asked to interpret the slope: __slope__ means that for every _unit_ ### The Regression Effect -In a test-retest situation, people with low scores tend to improve, and people with high scores tend to do worse. This means that individuals score closer to the average as they retest. +- In a test-retest situation, people with low scores tend to improve, and people with high scores tend to do worse. This means that individuals score closer to the average as they retest. +- The regression *fallacy* is contributing this to something other than chance error. + +--- # Terminology | Term | Definition | | -- | -- |