2.5 Linear Regression
Print and Turn in by the end of the hour
Names________________________
1. With a partner, choose a sport from the winter or summer Olympics. ____________________
2. Complete the following table with data researched from the internet: (You need to have a table
with data from at least 15 different Olympic Games. More if possible)
Year (L1)
Gold Medal Winning Time (L2)
3. Run a linear regression on your calculator. Write the equation
______________________________________
2.5 Linear Regression
Print and Turn in by the end of the hour
Names________________________
4. In Sketchpad, plot all the points and then plot the graph of your equation. To plot points go to
Graph|Plot Points. After typing in all the points, click Done. To graph the line, go to
Graph|Plot New Function. Once completed. Click PrntScrn and then paste the image below.
5. Use your equation to predict the winning time for the next Olympics. Show work below
calculating f(Year) = _____________________
6. Is it possible that this trend continues for the next 50 years? Explain why or why not.
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
7. If you substitute 2010 into your equation, why do you NOT get the winning time for 2010? How
does this relate to the graph of the points and the regression line?
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________