| Tag | Value |
|---|---|
| file | Inferential_Statistics_vufsw-equation-1023-en_vufsw-equation-1023-en |
| name | vufsw-equation-1023-en |
| section | inferential statistics/regression/equation |
| type | num |
| solution | 0.531 |
| tolerance | 0 |
| Type | performing analysis |
| Program | NA |
| Language | English |
| Level | statistical literacy |
If you were researching the effect of hours of training (predictor) and attitude (moderator) on the performance of a specific skill (e.g. the number of goals scored: performance), and the regression results give you the following regression equation, how much is the effect of hours of training on performance if attitude equals its mean? All the variables in this regression are mean-centred.
Use a full stop/point as a decimal separator and round to 3 decimals.
performance = 1.23* + 0.112 × attitude + 0.531* × hours + 0.167* × attitude × hours
* indicates a statistically significant effect
If attitude equals its mean then, since it is mean centered, it should be replaced by 0 in the regression equation.
performance = 1.23* + 0.112 × attitude + 0.531* × hours + 0.167* × attitude × hours
= 1.23 + 0.112 × 0 + 0.531* × hours + 0.167* × 0 × hours = 1.23 + 0.531 × hours