Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uu-ANCOVA-884-en_uu-ANCOVA-884-en
   name	uu-ANCOVA-884-en
   section	Inferential Statistics/Parametric Techniques/ANOVA/ANCOVA
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE
   Type	Interpretating output
   Program	SPSS
   Language	English
   Level	Statistical Reasoning

   Question

   Using the one-way ANOVA, we saw significant differences in average bullying behavior between the three groups. After adjusting for the variable years, the differences were suddenly no longer significant. What happened?

   

   
   
   1. FALSE: The covariate has already explained most of the dispersion. This led to a smaller between-group spread, making the differences between the groups relatively larger.
   2. FALSE: The inclusion of the covariate led to a larger between-group spread, resulting in a smaller F-ratio.
   3. FALSE: Including the covariate led to a smaller within-group spread. The corrected averages are further apart this way.
   4. TRUE: The covariate already explained most of the spread. This leads to a smaller intermediate dispersion, making the differences between the groups relatively smaller.