what is a directional hypothesis?

The hypothesis tells you what effect the IV has on the DV.

the hypothesis suggests that there is going to be a difference due to the IV but doesn't tell you how it's directed.

what are extraneous variables?

Variables other than the IV that are likely to affect the DV.

Variables that a researcher manipulates that have a direct effect on the DV.

Quiz

charlotte.get 3 questions Updated 19 Feb 2016

Take the quiz

1what is a directional hypothesis?
1. AThe hypothesis tells you what effect the IV has on the DV.
2. Bthe hypothesis suggests that there is going to be a difference due to the IV but doesn't tell you how it's directed.
2what are extraneous variables?
1. AVariables that a researcher manipulates that have a direct effect on the DV.
2. BVariables other than the IV that are likely to affect the DV.
3Matched pairs involves splitting the sample into two groups using random allocation.
1. ATrue
2. BFalse