Method 3

Next, we will look at using a computer software/applet to perform regression analysis.

# of Years Since Purchase of Car

Car's Value
(in dollars)
0
1
2
3
4
5		 23000
19550
16618
14125
12006
10205

 

Interactive exercise. Assistance may be required. Click on the image below to open the applet.

Enter the data from the table above into the x and y columns in the applet.

You can highlight the data in the "# of Years Since Purchase of Car’ column and copy/paste it into the "x’ DATA column in the applet.

Next, highlight the data in the "Car's Value" column and copy/paste it into the "y" DATA column.

After both sets of data are in the applet, press PLOT and then select the check box for Exponential Fit.