Unit 2 Linear Regression Notecards

Here are the "canned statements" to learn for the AP Statistics exam for Unit 2 (Linear Regression0

slope

For every 1 increase in [x], the [y value] is predicted to increase/decrease by _____.

y intercept

When the [x value] is 0, we predict the [y-value] to be _____.

Describe the relationship.

There is a [strong, moderate, weak], [positive, negative], [linear, nonlinear] relationship between [x in context] and [y in context]

r value (correlation coefficient)

There is a [strong, moderate, weak], [positive, negative], [linear, nonlinear] relationship between [x in context] and [y in context]

R² (correlation of determination)

____% of the variation in [y value in context] is explained by its linear relationship with [x value in context].

Standard deviation of residuals (s)

The typical distance between the actual [y values in context] and the predicted [y values in context]