Table 1 Descriptive statistics of writing scores across groups and time
From: AI-generated feedback on writing: insights into efficacy and ENL student preference
Test | Group | Descriptive statistics | Shapiro–Wilk | ||||||
|---|---|---|---|---|---|---|---|---|---|
N | Mean | SD | Skewness | Kurtosis | Statistic | df | Sig. | ||
T1 | EG | 23 | 27.522 | 1.301 | 0.287 | − 0.505 | 0.939 | 23 | 0.167 |
CG | 25 | 26.820 | 1.391 | − 0.882 | 0.331 | 0.926 | 25 | 0.070 | |
T2 | EG | 23 | 33.370 | 1.908 | − 0.361 | − 1.001 | 0.934 | 23 | 0.137 |
CG | 25 | 33.680 | 2.066 | 1.570 | 2.698 | 0.833 | 25 | 0.000* | |