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  3. Causal Inference with R - Experiments

Exercise

Identifying Heteroskedastic Outcomes

An easy way to identify whether the variability of a dependent variable is unequal across the range of values in an independent variable is to examine these relationships in a scatter plot. The R Workspace contains plots for income's relationship with three different predictors: Education, Age, and City Population. You can see each plot by clicking the "Next Plot" and "Previous Plot" buttons below the plot. Within the plots, each dot represents an observation from our sample. Using these plots, determine the independent variable with which income is most heteroskedastic.

Instructions

50 XP

Possible answers