Entering Data
Press the STAT and ENTER buttons. Your display should show a table with headings of L1, L2 and L3 across the top.
If there are numbers in the column below L1, use the arrow keys to put the cursor on L1 and press the CLEAR and ENTER buttons. This will delete all numbers below L1 and the cursor should now be in the first position below L1.You can enter numbers in your first list.
As an example, enter the following numbers: 5.1, 2.3, 5.7, 8.1, 4.6, 8.7, 6.5, 7.2, 5.7.
Just press the buttons corresponding to the digits of the number including a decimal point if necessary. Once the number is complete, you can either press the downarrow button or the ENTER button to move to the next position in the list.
For example, to enter 5.1, you press the buttons 5, . (period), 1 and then ENTER, and you will be ready to enter the next number. When you have finished entering the data given above, the L1 column should look similar to the following:
L1 
L2 
8.1 

4.6 

8.7 

6.5 

7.2 

5.7 



After you enter the last number, the first three numbers no longer appear at the top of the column; but if you use the uparrow key, you can move the cursor up to the top of the list and see all the numbers are still there. If you make a mistake, you can also use the uparrow button to move the cursor to the incorrect number, then enter digits with the same procedure as above, and press ENTER or the downarrow to replace the incorrect number with the correct one.
To enter data under L2, use the uparrow and rightarrow keys to put the cursor in the L2 column. If there is data under L2, put the cursor on L2 and press the CLEAR and ENTER buttons. Then you can enter the numbers under L2 just as you did under L1.