Group statistics |
|
Group |
N |
Mean |
Std. deviation |
Std. error mean |
Difference |
Experimental |
30 |
-8.0000 |
3.10728 |
0.56731 |
Control |
30 |
-4.0667 |
2.13240 |
0.38932 |
Independent samples test |
|
Levene's test for equality of variances |
t-test for equality of means |
|
F |
Sig. |
t |
df |
Sig. (2-tailed) |
Mean difference |
Std. error difference |
95% confidence interval of the difference |
|
Lower |
Upper |
Difference |
Equal variances assumed |
3.287 |
0.075 |
-5.717 |
58 |
0.000 |
-3.93333 |
0.68805 |
-5.31061 |
-2.55606 |
Equal variances not assumed |
|
|
-5.717 |
51.357 |
0.000 |
-3.93333 |
0.68805 |
-5.31441 |
-2.55225 |