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HOW TO PERFORM F TEST USING DATA WITH TI83 CALCULATOR

Steps Key Sequence Screens
1. Enter data into list, L1    
2. Enter data into list, L2    
3. Set up Stats Tests STAT
  twice
  APLHA, then x -1 key (for 2SampFTest...)
4. Select Data use left arrow key (if necessary) to move cursor to Data, then ENTER
5. Select list, L1 (press ALPHA), then 2nd, then 1, then ENTER
6. Select list, L2 (press ALPHA), then 2nd, then 2, then ENTER
7. Select appropriate test twice, then use right and left arrow keys to move cursor to appropriate test, then ENTER
8. Calculate F–Test once
  ENTER
9. Scroll down to find more calculations Press once
In this case, the test was Ha: σ1 > σ2; the F statistic is 4.611; the p–value is 0.00124; etc.
10. Draw the test repeat steps 1 through 7 (the data should already be stored!), then once, then ENTER