Education Technology

# Knowledge Base

## Solution 34420: Performing T-Test Computations Using the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.

### How do I compute a T-Test on the TI-83 Plus and TI-84 Plus Family of graphing calculators?

The following example demonstrates how to perform a T-Test calculation.

Data for this example:

{30.3, 30.5, 30.6, 31, 30.7, 30.7, 30.4, 30.9, 31}

Entering the data:

1) Press [STAT] [1] to access the STAT List Editor.
2) Input the example data into the L1 list, pressing the [ENTER] key after each entry.

3) Press [2nd] [MODE] to QUIT the STAT List Editor and return to the home screen.

Computing the T-Test:

1) Press [STAT] and scroll to the left to highlight TESTS menu.
2) Press [2] to select the T-Test function.

3) If "Data" is not selected, move the cursor to highlight Data and press [ENTER].
4) Input 30.5 for the claimed value of m0.
5) Make sure List: is set to L1. If not, move the cursor next to List: and press [2nd] [1].
6) Highlight >m0 and press [ENTER]. This means the mu (m) is greater than the alternate hypothesis (m0).

7) Scroll down to Calculate and press [ENTER]. The T-Test returns a test statistic of 2.1009.

Please see the TI-83 Plus and TI-84 Plus Family guidebooks for additional information.