What should Dr. Miller conclude? Do his results suggest that he can rule out extraversion as a third variable explanation of the effects of beer?
Research suggests a relationship between beers consumed and number of snapchats, finding that more beer consumption is associated with more snapchats sent on average. Miller wants to know if differences in extraversion might offer an alternative explanation of why some people send more snapchats than others. Perhaps more extraverted people send more snapchats and also drink more beer. Miller combines the data, that is, average extraversion ratings and number of beers consumed, in a multiple regression equation. His findings are presented in the table below:
|
DV: Snapchats |
|
|
|
Variable |
Beta |
Significance ( p) |
|
# Beers consumed |
.45 |
.02 |
|
Extraversion |
.30 |
.02 |
What should Dr. Miller conclude? Do his results suggest that he can rule out extraversion as a third variable explanation of the effects of beer?
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