TI Instructions: Linear Regression

To open a group of lists with the Olympic data loaded, right-click here and choose "Save Target As" to download the file to your computer. Then find the downloaded file and send it to your calculator. For instructions on how to connect your calculator to your computer and transfer a file, click here.

NOTE: This data set is fairly small (n=24 for two lists). It may be just as fast to enter the data yourself.

On the TI calculator, the dataset is displayed in lists L1-L2:

First let's explore the relationship between the two quantitative variables—year and time. Produce a scatterplot and use it to verify that year and time are nearly linear in their relationship.

Scatterplot

Note: If you prefer to set the viewing window yourself, choose WINDOW and set the values yourself for Xmin, Xmax, Xscl, Ymin, Ymax, Yscl. If the x-axis/y-axis show as a dark line, you can make Xscl/Yscl larger.