level: Level 2
Questions and Answers List
level questions: Level 2
| Question | Answer |
|---|---|
| What is the IV | Independent variable, the variable that is manipulated |
| What is the DV | The variable that is measured as as result of manipulating the IV |
| Systematic variation | Variance due to experimental manipulation |
| Unsystematic variation | Variance due to other sources |
| What is an ANOVA? | Analysis of variance, it looks at the variability of a data set to establish whether the means of the different conditions are the same or not |
| What is another name for the ANOVA statistic? | F-Ration |
| When is a One-way independent ANOVA used? | When you have a between-participants design |
| When is a One-way repeated measures ANOVA used? | When you have a within-participants design |
| What is the formula for a one-way ANOVA? | F=systematic variance/unsystematic variance |
| What are post-hoc tests? | post-hoc tests compare each possible pair of conditions |
| What must you do if your ANOVA produced results p<0.05 rejecting the null hypothesis? | Run post-hoc tests |
| Give an example of a post-hoc test | Bonferroni |
| What does it mean if the unsystematic variance outweighs the systematic variance? | F<1 and will never be significant |
| How do we write up an ANOVA in APA format? | F(2,297)=7.34,p=0.001,ƞp2= .05 |
| What assumptions must be met for a repeated-measures ANOVA to be reliable? | Independece within groups and assumption of sphericity |
| What is the assumption of sphericity? | It assumes the variances between the different combinations of conditions are equal |