| A | B |
|---|
| N - 1 | DF in a one sample or paired samples design |
| N - 2 | DF in an independent samples (or correlational) design |
| SMALL N | this makes for smaller t scores and makes it harder to attain significance |
| BIG DIFFERENCE BETWEEN MEANS | this makes for a larger t-score, and better significance |
| T | distribution flatter than the normal curve |
| Z | the last row of a t table gives this |
| TAILS | using two of these is more strict |
| DEGREES OF FREEDOM | DF stands for |
