Description

Overview:

As teachers of statistics, we know that residual plots and other diagnostics are important to deciding whether or not linear regression is appropriate for a set of data. Despite talking with our students about this, many students might believe that if the correlation coefficient is strong enough, these diagnostic checks are not important. The data set included in this activity was created to lure students into a situation that looks on the surface to be appropriate for the use of linear regression but is instead based (loosely) on a quadratic function.

Subject:

Statistics and Probability

Level:

Community College / Lower Division, College / Upper Division

Material Type:

Activity/Lab

Author:

Jacqueline B. Miller, Miller, Jacqueline B.

Provider:

Consortium for the Advancement of Undergraduate Statistics Education

Provider Set:

Causeweb.org

Date Added:

02/16/2011