# 13.6 Notes for the ti-83, 83+, 84 calculator

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Notes and tips for using TI-83, TI-83+, and TI-84 calculators for statistics applications.

## Legend

• represents a button press
• [ ] represents yellow command or green letter behind a key
• <> represents items on the screen

Press , then hold to increase the contrast or to decrease the contrast.

## To capitalize letters and words

Press to get one capital letter, or press , then to set all button presses to capital letters. You can return to the top-level button values by pressing again.

## To correct a mistake

If you hit a wrong button, just hit and start again.

## To write in scientific notation

Numbers in scientific notation are expressed on the TI-83, 83+, and 84 using E notation, such that...
• 4.321 E 4 = $4.32110^{4}$
• 4.321 E -4 = $4.32110^{-4}$

## To transfer programs or equations from one calculator to another:

Both calculators: Insert your respective end of the link cable cable and press , then [LINK] .

## Calculator receiving information:

1. Use the arrows to navigate to and select <RECEIVE>
2. Press

## Calculator sending information:

1. Press appropriate number or letter.
2. Use up and down arrows to access the appropriate item.
3. Press to select item to transfer.
4. Press right arrow to navigate to and select <TRANSMIT> .
5. Press
ERROR 35 LINK generally means that the cables have not been inserted far enough.
Both calculators: Insert your respective end of the link cable cable Both calculators: press , then [QUIT] To exit when done.

## Manipulating one-variable statistics

These directions are for entering data with the built-in statistical program.
Sample data
Data Frequency
-2 10
-1 3
0 4
1 5
3 8

## To begin:

1. Turn on the calculator.

2. Access statistics mode.

3. Select <4:ClrList> to clear data from lists, if desired.

,

4. Enter list [L1] to be cleared.

, [L1] ,

5. Display last instruction.

, [ENTRY]

6. Continue clearing remaining lists in the same fashion, if desired.

, , [L2] ,

7. Access statistics mode.

8. Select <1:Edit . . .>

9. Enter data. Data values go into [L1] . (You may need to arrow over to [L1] )
• Type in a data value and enter it. (For negative numbers, use the negate (-) key at the bottom of the keypad)

, ,

• Continue in the same manner until all data values are entered.
10. In [L2] , enter the frequencies for each data value in [L1] .
• Type in a frequency and enter it. (If a data value appears only once, the frequency is "1")

,

• Continue in the same manner until all data values are entered.
11. Access statistics mode.

12. Navigate to <CALC>
13. Access <1:1-var Stats>

14. Indicate that the data is in [L1] ...

, [L1] ,

15. ...and indicate that the frequencies are in [L2] .

, [L2] ,

16. The statistics should be displayed. You may arrow down to get remaining statistics. Repeat as necessary.

## Drawing histograms

We will assume that the data is already entered

We will construct 2 histograms with the built-in STATPLOT application. The first way will use the default ZOOM. The second way will involve customizing a new graph.

1. Access graphing mode.

, [STAT PLOT]

2. Select <1:plot 1> To access plotting - first graph.

3. Use the arrows navigate go to <ON> to turn on Plot 1.

<ON> ,

4. Use the arrows to go to the histogram picture and select the histogram.
5. Use the arrows to navigate to <Xlist>
6. If "L1" is not selected, select it.

, [L1] ,

7. Use the arrows to navigate to <Freq> .
8. Assign the frequencies to [L2] .

, [L2] ,

9. Go back to access other graphs.

, [STAT PLOT]

10. Use the arrows to turn off the remaining plots.
11. Be sure to deselect or clear all equations before graphing.

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