From cec5628c4a7dad7698d29030cb6a452ae257c8cd Mon Sep 17 00:00:00 2001 From: zleyyij Date: Tue, 12 Dec 2023 14:43:22 -0700 Subject: [PATCH] vault backup: 2023-12-12 14:43:22 --- education/statistics/Correlation and Regression.md | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/education/statistics/Correlation and Regression.md b/education/statistics/Correlation and Regression.md index 96c1356..e145fc6 100644 --- a/education/statistics/Correlation and Regression.md +++ b/education/statistics/Correlation and Regression.md @@ -3,7 +3,13 @@ # Correlation ## Scatter Diagrams A scatter diagram or scatter plot shows the relationship between two variables. One variable is on the X axis, the other on the Y axis. - +### Association +- Positive association is demonstrated when the dots are trend upward as `x` increases. +- Negative association is demonstrated when the the dots trend downward as `x` increases. +- Strong association is demonstrated when dots are clustered tightly together along a line. +- Weak association is demonstrated when dots are not clustered tightly. +## Correlation +Correlation is between `-1` and `1`. Correlation near 1 means tight clustering, and correlation near 0 means loose clustering. # Terminology | Term | Definition |