Question: What does R-squared measure in a linear regression model?

Options:

1. The strength of the relationship between the independent and dependent variables
2. The average error of the predictions
3. The number of predictors in the model
4. The slope of the regression line

Correct Answer: The strength of the relationship between the independent and dependent variables

Solution:

R-squared measures the proportion of variance in the dependent variable that can be explained by the independent variable(s) in the model.