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# Regression

• ### How Much is a Fireplace Worth?

This case study starts by the simple comparison of the prices of houses with and without fireplaces and extends the analysis to examine other characteristics of the houses with fireplace that may affect the price as well. The intent is to show the danger of using simple group comparisons to answer a question that involves many variables. The lesson shows the R code for doing this analysis; however, the data and the model could be used with another statistical software.

• ### Data Collection: Lock 5 Data Sets

The textbook, "Statistics: Unlocking the Power of Data," by Lock, Lock, Lock, Lock, and Lock, webpage has a collection of data sets which are used in their textbook. Even without the textbook, the variables are well named, and it is relatively easy to tell what the variables represent.
• ### Estimating Ages of Famous People

This webpage provides an active learning lesson for linear regression. Resources include an in-class student activity sheet for two different levels of classes (Algebra I and Junior), a PowerPoint showing faces of famous people, and sheet with updated (to the end of current year) actual ages of the celebrities.
• ### Song: The Line

A song to aid in teaching upper division or masters level regression concepts. The lyrics were written by Kyle White from North Carolina State University for performance by the NCSU band "The Fifth Moment" (Kristin Linn, Jason Osborne, Siddharth Roy, Bradley Turnbull, Joseph Usset, and Kyle White). The song is a parody of the 2001 hit "The Middle" by the American alternative rock band Jimmy Eat World. The song won an honorable mention in the 2013 CAUSE A-Mu-sing competition and a performance of it by "The Fifth Moment" can be seen at http://www.youtube.com/watch?v=zdhqQGrCITI Free for use in non-profit education settings.

• ### Song: Shrink It

A song for teaching about the importance of penalized regression methods (ridge regression, LASSO, etc...). The song was written by Bradley Turnbull, Joe Usset, Sidd Roy, and Kyle White who, along with Kristin Linn and Jason Osborne, form the North Carolina State University Statistics Department Graduate Student band, "The Fifth Moment". The lyrics may be sung to the tune of the 2008 hit "Shake It" by the American pop group "Metro Station". "Shrink It" also won an honorable mention in the 2013 CAUSE A-Mu-sing competition. Available for free use in non-profit education settings.

• ### Poem: Some Regression Haiku

Three Haiku related to regression including the topics of checking assumptions, dealing with non-linear patterns, and partitioning sums of squares. The Haiku were written by Elizabeth Stasny of The Ohio State University and were awarded a tie for second place in the poetry category of the 2011 CAUSE A-Mu-sing competition.

• ### Joke: The commitment ceremony

A joke to teach the meaning of "significance" written in 2011 by University of Texas at El Paso professor of Mathematical Sciences, Lawrence Mark Lesser (1964-).

• ### Cartoon: The Four-Caster

A cartoon to use in teaching about the dangers of extrapolation in the context of predicting the future. Cartoon by John Landers (www.landers.co.uk) based on an idea from Dennis Pearl (The Ohio State University). Free to use in the classroom and on course web sites.
• ### Poem: Regression to the Mean

Regression to the Mean is a 2009 poem and animation by Andrew Porter of Wirral, England. The poem is also available at the author's website (www.inkptamus.com) in a longer version that focuses more on issues in medicine. The poem can be used in teaching about regression to the mean and the regression fallacy. Free for use in non-profit educational settings.
• ### Be an Actuary

For anyone who wants to know more about what an actuary does or how to become an actuary (including a comprehensive list of colleges with actuarial programs), this is an excellent resource.