Press the "STAT" key on the graphing calculator.

Select the "EDIT" function by using the DOWN arrow key to position the cursor on the "1:EDIT" option and pressing the "ENTER" key.

A screen will be displayed in table format having column headings "L1, "L2", "L3".

To remove ALL existing data in these columns, use the arrow keys to position the cursor ON the column heading, such as "L1". Then press the "CLEAR" key followed by the "ENTER" key. This will remove all existing data in column "L1".

Remover ALL existing data in columns "L1" and "L2" if they contain any data.

Now the data is ready to be entered into the calculator. We are going to enter the times in the "L1" column. To key in the first time of "0", position the cursor in the "L1" column BELOW the "L1" column heading. Now press the "0" key followed by the "ENTER" key. This will list "0" as the first entry in the "L1" column. Next press the decimal key "." followed by each digit of the "Average of the Average Drop Times" from the Data Analysis Chart for the height 10-inches. Then press the "ENTER" key. Now the "Average of the Average Drop Times" for 10-inches will be listed below the "0" entry in the "L1" column. Continue this process until all "Average of the Average Drop Times" are entered in the "L1" column in ascending order.

Now the height data is ready to be entered in column "L2". Position the cursor in the "L2" column BELOW the "L2" column heading. Remember to key in "0" as your first entry in column "L2". Now continue to key in the heights in column "L2" until all heights are entered in ascending order.

To stop entering data and exit this screen, press the "2nd" key followed by the "MODE" key.

To set up the view of the graph on the calculator, press the "2nd" key followed by the "Y=" key located in the upper left-hand corner of the calculator. (Note that the "Y=" key also stands for "STATPLOT".) This will display the "STAT PLOTS" screen.

Using the arrow keys, position the cursor on the first selection for "1:Plot1" and press the "ENTER" key. This will display the "Plot1 Plot2 Plot3" screen and "Plot1" will be highlighted.

Position the cursor on the word "ON" and press the "ENTER" key. This will highlight the word "ON". (Note that the word "Off" should NOT be highlighted.)

Using the DOWN arrow key, position the cursor on the picture of the graph having the points connected with a line. The graph pictures are listed as "Type:". The graph having the points connected with a line is usually located in the center of the first row of graphs. Press the "ENTER" key to highlight this graph.

Using the DOWN arrow key again, position the cursor ON the entry for "Xlist:". This entry represents the x-axis on your graph which is to be the "Average Drop Time" data that was entered in column "L1" of the data entry table. Press the "2nd" key followed by the "1" key followed by the "ENTER" key. (Note that the "1" key also stands for "L1".)

The cursor should be on the entry for "Ylist:" now. This entry represents the y-axis on your graph which is to be the "Height" data that was entered in column "L2" of the data entry table. Press the "2nd" key followed by the "2" key followed by the "ENTER" key. (Note that the "2" key also stands for "L2".)

The cursor should be on the entry for "Mark:" now. This entry represents the symbol to be plotted on your graph for each specific (average drop time, height) value of your data. Select the "square" by positioning the cursor with the arrow keys on that mark. Now press the "ENTER" key. The "square" mark should now be highlighted.

To exit this screen, press the "2nd" key followed by the "MODE" key.

Display the "STAT PLOTS" screen again by pressing the "2nd" key followed by the "Y =" key.

Look at the information displayed for "2:Plot2" and "3:Plot3". If either or both of these Plots have "ON" indicated next to them, they need to be turned "OFF". To turn OFF Plot2, position the cursor on the selection for "2:Plot2" and press the "ENTER" key. This will display the "Plot1 Plot2 Plot3" screen and "Plot2" will be highlighted.

Position the cursor on the word "OFF" and press the "ENTER" key. This will highlight the word "OFF". (Note that the word "On" should NOT be highlighted.)

Now exit this screen by pressing the "2nd" key followed by the "MODE" key.

Display the "STAT PLOTS" screen again by pressing the "2nd" key followed by the "Y =" key.

Look at the information displayed for "2:Plot2" and "3:Plot3" again. If either or both of these Plots have "ON" indicated next to them, they need to be turned "OFF". Turn OFF the Plot as described in the previous steps.

To exit this screen, press the "2nd" key followed by the "MODE" key.

The WINDOW settings are modified to enable us to see the graph correctly. Press the "WINDOW" key to display the "WINDOW" screen.

Using the arrow keys, position the cursor on the entry for "Xmin=". Now press the "(-)" key followed by the decimal "." key followed by the "1" key. DO NOT PRESS THE "ENTER" KEY. The value "-.1" should now appear as the "Xmin=" entry.

Use the arrow keys to position the cursor on the entry for "Xmax=". Now press the decimal "." key followed by the "8" key. DO NOT PRESS THE "ENTER" KEY. The value ".8" should now appear as the "Xmax=" entry.

Continue in the same manner using the arrow keys to position the cursor on the following entries. Change the entries to those listed here.

Press the "2nd" key followed by the "MODE" key to exit the "WINDOW" screen.

To view the graph, press the "GRAPH" key located in the upper right-hand corner of the calculator.

On paper, make a copy of this graph to turn in to your teacher. Label the x-axis "Time" and the y-axis "Height". The graph is showing the rate of fall in terms of (height in inches)/(time in seconds). Title your graph "Rate of Fall".

To exit the graph on the calculator, press the "2nd" key followed by the "MODE" key.

The graph of the sample test data reflects a graph increasing exponentially or by a power.

First, we must remove the zero entries from columns "L1" and "L2" in the data entry table.

Press the "STAT" key on the graphing calculator.

Select the "EDIT" function by using the DOWN arrow key to position the cursor on the "1:Edit" option and pressing the "ENTER" key.

A screen will be displayed in table format having column headings "L1", "L2","L3".

To remove the "0" entry from columns "L1" and "L2", using the arrow keys, position the cursor on the "0" entry. Then press the "DEL" key for delete. Repeat this process to remove the "0" entry from the other column.

Now press the "2nd" key followed by the "MODE" key.

Now press the "STAT" key to display the screen with column headings "EDIT" "CALC" and "TEST".

Use the arrow key to position the cursor on the column heading "CALC". This will change the options displayed on the screen.

Since the graph of our data showed "Time" increasing exponentially by a power, we will use the DOWN arrow key to highlight the "A|PwrReg" option. This stands for power regression. Now press the "ENTER" key. The screen will display the word "PwrReg" at the bottom of the screen with a blinking cursor following it.

Press the "ENTER" key again. BE PATIENT. It will take a few seconds before the next screen is displayed.

The next screen will look similar to the following:

                        PwrReg

                        Y = a*x^b

                        A = 179.9581443

                        B = 1.928335281

                        R^2 = .9981017564

                        R = .9990504273

Copy all of the above values from your calculator on your Data Analysis Chart next to "Calculated Regression Analysis:". Note that "Y= a * x^b" is the calculators way of displaying the math equation

Y = a * (x^b).

Below the equation, the calculator displays the values of "a" and "b" for the equation. The closer the "r =" value is to "1", the more accurate the equation is.