Statistics for Psychology: A Beginner's Guide
Second Edition
Your Turn Answers
Cross out the wrong word in each sentence
1. The effect of each IV independently on the DV is called a main effect/interaction effect.
2. An easy way to think about interactions is to think of them like an addition/switch.
3. When added together, IVs can explain up to 100%/50% of the variance of a DV.
Fill in the table with the missing values
You may find it useful to look back in Section 11.4.
IV1 Effect Size |
IV2 Effect size |
DV Variance explained |
Total DV Variance explained |
Effect Size |
0.15 |
0.6 |
0.15^{2} = 0.0225 0.6^{2} = 0.36 |
(0.15^{2} + 0.6^{2}) = 0.3825 |
sqrt(0.15^{2} + 0.6^{2}) = 0.62 |
0.3 |
0.1 |
0.09 0.01 |
0.10 |
0.32 |
–0.25 |
0.4 |
0.0625 0.16 |
0.2225 |
0.47 |