0.1 The model

We built a linear regression model using

fit <- lm(dist ~ speed, data = cars)

We get the following output

Estimate Std. Error t value Pr(>|t|)
(Intercept) -17.579 6.758 -2.601 0.012
speed 3.932 0.416 9.464 0.000

Note that the slope of the regression is 3.9324088.

The model fitted values (fitted.values) and residuals (fit$residuals) are

## Loading required package: DT

0.2 Some plots