How do I check linear regression assumptions?

How do I check linear regression assumptions?

To check linear regression assumptions, you should evaluate linearity, independence, homoscedasticity, and normality of residuals.

What does homoscedasticity mean?

Homoscedasticity refers to the condition where the variance of the residuals is constant across all levels of the independent variable.

How can I test for normality of residuals?

You can test for normality of residuals using the Shapiro-Wilk test or by creating a Q-Q plot.

What should I do if my assumptions are violated?

If assumptions are violated, you might consider transforming your data, using robust regression techniques, or applying different modeling approaches.