STAT W21 Lecture Notes - Lecture 5: Homoscedasticity, Heteroscedasticity, Scatter Plot
Document Summary
Involves making two or more measurements per individual (can be visualized through. Association: two variables are associated if some of the variability of one can be accounted for scatterplots) Point of averages: its horizontal coordinate is the mean of the values of the variable plotted on the horizontal axis and its vertical coordinate is the mean of the values of the vertical axis variable. A linear relationship has all of the points roughly. A nonlinear relationship shows a pattern that is not a straight line. Homoscedastic: when the scatter in y is about the same in different vertical slices. Heteroscedastic: scatter in vertical slices depends on where you take the slice.
