arc/notes
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

vault backup: 2023-12-13 14:23:19

Browse Source
This commit is contained in:
zleyyij 2023-12-13 14:23:19 -07:00
parent 7f0d9ce6c4
commit 5d5eb19d79
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
education/statistics/Correlation and Regression.md
View File

@ -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. 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 ### Association
- Positive association is demonstrated when the dots are trend upward as $x$ increases ($r$ is positive). - 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). - Negative association is demonstrated when the the dots trend downward as $x$ increases ($r$ is negative).