Activity 2.2: Does the Data Fit?
Enter the data in the spreadsheet provided. Then enter the number of points you wish to plot and hit the Plot Points Button. You can then find your equation for the line of best fit and the Correlation Coefficient by checking the box.
What is the slope of the line of regression? Compare your slope to those of the other students with Activity 2.2. What do you notice? Compare your slope to those of others in your class (with other activities.) What do you notice? If a person's distance from head to navel is 55 cm, what would you expect the pants length to be? Why? Does it matter if your measurement was made in cm or inches? Why? If another person's distance from head to navel is 30 inches, what would you expect the pants length to be? Why? If someone wears 40 inch length pants, what would be a good prediction for the distance from his head to his navel? Why?