Scatterplot

A SCATTERPLOT is used to view a set of real data graphically. Consider the following data.

x	0	1	2	3	5
y	3	4	8	9	10

To create a scatterplot of this data, make sure that all the Y's are clear in the menu.

Now select and set an appropriate Viewing Rectangle. Since the x values range from 0 to 5, choose a range slightly larger than that, namely -1 to 6. Since the y values range from 3 to 10, select 0 to 15.

Thus, theViewing Rectangle of [-1, 6,1] by [0, 15, 1], has been selected. To set this Viewing Rectangle, press WINDOWand enter -1 for Xmin, 6 for Xmax, 1 for Xscl, 0 for Ymin, 15 for Ymax,and 1 for Yscl.

Now, press 2nd and then Y= [STAT PLOT]. The calculator screen should look the one on the left below. 1 is highlighted, so press ENTER to select the first plot. Now, select ON in the first row, then select the first TYPE. Xlist and Ylist should already be selected as and . The MARK selected does not matter, so choose one of them.

To enter the data for the scatterplot, press STAT, and select 1:Edit by pressing ENTER. If the lists are not all cleared as shown in the screen below, go to see Clearing Lists.

Enter the data values for X in and the data values for Y in , keeping each pair together on the same horizontal line. Then press GRAPH.