Tag | Value |
---|---|
file | Inferential_Statistics_vufsw-equation-1022-nl_vufsw-equation-1022-nl |
name | vufsw-equation-1022-nl |
section | inferential statistics/regression/equation |
type | schoice |
solution | TRUE, FALSE, FALSE, FALSE |
Type | interpreting output |
Program | NA |
Language | Dutch |
Level | statistical literacy |
Als je onderzoek deed naar het effect van hours training en attitude op de prestaties van een specifieke vaardigheid (bijv. Aantal gescoorde goals: performance), en de regressieresultaten geven je de volgende regressievergelijking, welke van de volgende uitspraken is waar?
performance = 1.23* + 0.112 × attitude + 0.531* × hours + 0.167* × attitude × hours
* betekent statistisch significant
performance = 1.23* + 0.112 × attitude + 0.531* × hours + 0.167* × attitude × hours
The effect of hours on performance is:
(0.531 + 0.167*attitude). So, if attitude is positive, this number we always be positive.Since, both the coefficient of the main effect of hours and the interaction effect are statistically significant, we expect the effect of hours to be always significant if attitude is positive.