Week 13: Model Basics

Today’s Question

What does a statistical model claim?

Linear Model

A simple linear model describes an average relationship between a response and an explanatory variable.

fit <- lm(mpg ~ wt, data = mtcars)
summary(fit)

Interpretation

Coefficients need context, units, and uncertainty.

Diagnostics

Residuals help reveal structure the model did not explain.

AI Check

Generated model interpretations often sound confident. Check assumptions and supported claims.