example 7 U.S. Executions Chapter 1.2 The table gives the number of executions in the United States for selected years from 1984 to (Source: “The Death Penalty in the U.S.,” a.Align the data so that x = the number of years after 1980, and enter these x-values in list L1. Enter the number of executions in L2. b.Use a graphing command to create the scatter plot of these data points. Year Number of Executions  2009 PBLPathways

The table gives the number of executions in the United States for selected years from 1984 to (Source: “The Death Penalty in the U.S.,” a.Align the data so that x = the number of years after 1980, and enter these x-values in list L1. Enter the number of executions in L2. Year Number of Executions

 2009 PBLPathways The table gives the number of executions in the United States for selected years from 1984 to (Source: “The Death Penalty in the U.S.,” a.Align the data so that x = the number of years after 1980, and enter these x-values in list L1. Enter the number of executions in L2. b.Use a graphing command to create the scatter plot of these data points. Year Number of Executions

 2009 PBLPathways The table gives the number of executions in the United States for selected years from 1984 to (Source: “The Death Penalty in the U.S.,” a.Align the data so that x = the number of years after 1980, and enter these x-values in list L1. Enter the number of executions in L2. b.Use a graphing command to create the scatter plot of these data points. x Number of Executions

 2009 PBLPathways The table gives the number of executions in the United States for selected years from 1984 to (Source: “The Death Penalty in the U.S.,” b.Use a graphing command to create the scatter plot of these data points. x Number of Executions x

 2009 PBLPathways The table gives the number of executions in the United States for selected years from 1984 to (Source: “The Death Penalty in the U.S.,” b.Use a graphing command to create the scatter plot of these data points. x Number of Executions x

 2009 PBLPathways The table gives the number of executions in the United States for selected years from 1984 to (Source: “The Death Penalty in the U.S.,” b.Use a graphing command to create the scatter plot of these data points. x Number of Executions x

 2009 PBLPathways The table gives the number of executions in the United States for selected years from 1984 to (Source: “The Death Penalty in the U.S.,” b.Use a graphing command to create the scatter plot of these data points. x Number of Executions

 2009 PBLPathways Clear the lists 1.Press the  key. 2.Since lists L 1 and L 2 may have data in them already, you’ll start by selecting 4: ClrList. Press . This pastes ClrList on the Home Screen. 3.Now you need to indicate the lists you want to clear. Press   followed by . You can enter as many lists as you want as long as they are separated by.

 2009 PBLPathways Alternate method for clearing lists 4.You can also clear a list by pressing  and selecting 1: Edit. 5.This takes you to the list editor. Move your cursor to the top of the column that you want to clear. 6.To clear the list, press . The entries in that column will be cleared. You can move the cursor to the tops of other columns and clear those too.

 2009 PBLPathways Enter the data points 7.Press the  key. 8.Press  to select 1:Edit or move the cursor to 1:Edit and press . This brings you to the screen where you can enter the data in the lists. 9.Enter the Years from 1980-values in list L 1. Use the down arrow , right arrow  or  to move from line to line or column to column. 10.Enter the Number of executions- values in L 2.

 2009 PBLPathways Set the window 11.Press the  key. 12.After you examine the data, choose window values that include these values and some “space” above and below the highest and lowest values of x and y. 13.Set the window elements to Xmin = 0, Xmax = 30, Xscl = 5, Ymin = 0, Ymax = 120, and Yscl = 20. Press the down arrow  or  to move from line to line.

 2009 PBLPathways Use STAT PLOT to turn on and format the scatter plot of data points 14.Press   to access STAT PLOT. 15.Select 1: Plot 1 ON, press . 16.Select Type: first one for a scatter plot – individual points, press . 17.On the same screen select XList: L1 or whichever list has the x-data YList: L2 or whichever list has the y-data Mark: any one you wish

 2009 PBLPathways 18.Press the  key to see the scatter plot. 19.Use  and the right arrow to move from point to point. The x and y coordinates of each point are displayed at the bottom of the screen. 20. P1:L1,L2 is displayed in the upper left hand corner of the screen. This tells you that you are on Plot 1, the x’s are from list L 1, and the y’s are from list L You can also turn a STAT PLOT on or off from the equation editor. To access the equation editor, press .

 2009 PBLPathways 22.Use the arrow keys to navigate the cursor to Plot 1, Plot 2, or Plot 3. You can turn a plot on by highlighting the appropriate plot. Press  to turn the plot on or off.