Keystroke Guide 
AP Calculus 
Clear Home screen, Clear Edit Line, and Enter f(x)

Assigning a Number as the Random Seed

Random Integer Generator To generate a random integer between 1 and 25,

Creating a Scatter Plot with User Defined Window Values After defining Plot 1 by setting the options in Plot 1's dialog box, you should be at the Plot Setup... screen, as shown below.
Set the Window Values
The values are set a little outside the values in the table to make sure that each point is shown in the graph window.

Enter "list1" into the "X List" box

Enter "list2" into the "Y List" box

Store the Regression Equation into y1

Displaying the Stats/List Editor The TI89 Statistics and List Editor, an application that is found in newer TI89's, can be freely downloaded from TI's web site. Find out if your calculator has the Statistics and List Editor application.
If one of the menu items is "Stats/List Editor," you are ready to proceed.
If you do not have this feature, obtain the free upgrade from the TI Education web site at http://education.ti.com/product/tech/89/apps/apps.html. You will need a Graph Link cable and TIGraph Link(89) software to install the upgrade from your computer to your calculator. Entering Data Before you can enter data into your calculator, you must display the Stats/List Editor.
If this is the first time you have opened the Stats/List Editor since you turned on your calculator, you will see the following dialog box.
This dialog box can be used to create a separate folder for statistics applications, but you don't need to do that.
The Stats/List Editor The screen below is called the Stats/List Editor.
Entering/Deleting Data As you enter a value, it should appear in the Edit Line. The value should appear in the list after you press . If you make a mistake, you can type over a value. You can insert entries by using or delete entries using . A quick way to delete an entry in a list is to highlight the entry by using the cursor movement keys and then press . You can clear an entire list's values by moving the cursor to highlight the list name and pressing , but pressing will not delete an individual entry. 
Creating a Scatter Plot Enter the data into two lists such as list1 and list2.
If "Plot Type" does not indicate "Scatter,"
"Mark" should be set to the symbol that will be used to mark each data point.
Define the Lists that Contain the Variables
Designate the list that contains the yvalues by using a similar procedure. The Define Plot 1 dialog box should have the selections shown.
There are two options for displaying the Scatter Plot at this point: using Zoom Data or entering your own Window Values. Create the Scatter Plot Using Zoom Data
Creating a Scatter Plot with User Defined Window Values After defining Plot 1 by setting the options in Plot 1's dialog box, you should be at the Plot Setup... screen, as shown below.

AutoPaste from the History Area
Note: If there is something on the edit line that is not highlighted, then what you autopaste will be combined with what is on the edit line. 
Creating and Storing a Regression Equation Opening the Stats/List Editor.
Data should be stored in two lists. Calculating the Regression Equation
The third option in this menu is "Regressions".
There are many types of functions in this submenu.
You will specify where the x and yvalues are stored and designate where the regression equation will be stored in this dialog box. The entry in the "X List" box should indicate the name of the list that contains the x values.
The entry in the "Y List" box should indicate the name of the list that contains the yvalues. Storing the Regression Equation into the Y= Editor The entry beside "Store RegEqn to:" indicates the place where the regression will be stored.
When the values for the Regression dialog box have been properly selected,
After the calculator creates the regression equation, a screen containing the regression values will appear. The regression equation has been stored in the Y= Editor. 
Resetting the Factory Defaults Press [MEM] 
Scatter Plot Keystrokes

Regression Equation Keystrokes
The names of all lists that currently contain data are found the main folder, which is displayed by pressing . 
