From 5d5eb19d79a8758a033ccb23945605d3765881e7 Mon Sep 17 00:00:00 2001 From: zleyyij Date: Wed, 13 Dec 2023 14:23:19 -0700 Subject: [PATCH] vault backup: 2023-12-13 14:23:19 --- education/statistics/Correlation and Regression.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/education/statistics/Correlation and Regression.md b/education/statistics/Correlation and Regression.md index 2b4cf58..93f9ec8 100644 --- a/education/statistics/Correlation and Regression.md +++ b/education/statistics/Correlation and Regression.md @@ -16,7 +16,7 @@ If a scatter diagram is football shaped, it can be summarized using the 5-number The intersection of the averages of x and y will be the center of an oval shaped scatter diagram. Draw lines $2\sigma$ (will contain ~95% of all data) from the center along each axis to generalize the shape of a scatter plot. -You can appr +You can approximate the mean by trying to find the upper bound and the lower bound of $2\sigma$ deviation to either side of the mean, then finding the middle of those two points to find $\mu$. ### Association - Positive association is demonstrated when the dots are trend upward as $x$ increases ($r$ is positive). - Negative association is demonstrated when the the dots trend downward as $x$ increases ($r$ is negative).