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Ordinary least squares

math Maturity 11-13

We can use dots to show facts.

OLS example weight vs height scatterplot.svg
OLS example weight vs height scatterplot.svg
Sometimes dots do not make a line. We can draw a line to fit them. This line stays close to all the dots. It helps us see a pattern.
OLS example weight vs height fitted line.svg
OLS example weight vs height fitted line.svg
Can you find a pattern?

54 words
🖼️ Images & Media (10)
File:Okuns law quarterly differences.svg
Okuns law quarterly differences.svg
File:OLS geometric interpretation.svg
OLS geometric interpretation.svg
File:Geometric interpretation of least squares (three observations).png
Geometric interpretation of least squares...
File:Polyreg scheffe.svg
Polyreg scheffe.svg
File:Heteroscedasticity in Linear Regression.png
Heteroscedasticity in Linear Regression.png
File:Independence of Errors Assumption for Linear Regressions.png
Independence of Errors Assumption for...
File:OLS example weight vs height scatterplot.svg
OLS example weight vs height scatterplot.svg
File:OLS example weight vs height fitted line.svg
OLS example weight vs height fitted line.svg
File:OLS example weight vs height residuals.svg
OLS example weight vs height residuals.svg
File:HeightWeightResiduals.jpg
HeightWeightResiduals.jpg
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📚 Content adapted from Wikipedia | Readability: FK 13.9 | Vital Level 4