I am interested in whether music volume in a cafe makes a customer feel more relaxed. However, I suspect that the level of hunger may be a potential confound. The best statistical analysis to test this would be:
Question 6Answer
a.
None of the other options are correct
b.
Multiple regression, with both ‘music volume’ and ‘hunger’ as IVs and ‘relax’ as the DV
c.
Two simple linear regressions, with ‘music volume’ and ‘hunger’ as IVs in separate regression models
d.
Correlation, testing the association between ‘music volume’ and ‘relax’