Table 2 t-test: paired two sample for means of the cognitive pretest versus posttest
Pretest | Posttest | t-test | |
|---|---|---|---|
Number of Observations | 113 | 113 | |
Mean | 58.9% | 71.6% | |
Variance | 157.1 | 385.7 | |
Degrees of freedom | 112 | 112 | 224 |
Calculated t-value | 5.56 | ||
Critical t-value (two-tail, alpha = 0.05) | 1.98 | ||
p-value | 1.85 × 10-7 |