Table 2 Multiple regression analysis. A stepwise forward variable selection algorithm was applied and “number of logins”, “total questions” and “total time” was removed from the final model. The parameters “total score”, “score first attempt” and “time per question” were included in the final model
Variable | Effect change | SE | t-value | r-square | p-value |
|---|---|---|---|---|---|
Score first attempt | 0.67 | 0.11 | 6.03 | 0.52 | < 0.0000001 |
Time per question | −1.56 | 0.33 | −4.75 | 0.05 | 0.000004 |
Total score | 0.34 | 0.12 | 2.73 | 0.014 | 0.007 |