Variables Flashcards
1
Q
A sports coach wants to test if red juice makes her athletes run faster than blue juice. She has two groups of athletes. One group drinks red juice, one group drinks blue juice. All participants run 100m and the coach times the athletes. She then calculates an average for each group.
A
Question
2
Q
DV
A
Thing measured: times
3
Q
IV
A
Thing changed: colour of juice
4
Q
Extraneous Variable
A
- Experiments are where IV is changed and we observe effect on DV
- Extraneous variables are nuisance variables that may affect the DV
- Lighting, temperature, age of participants, the weather etc.
5
Q
Confounding Variable
A
Vary systematically with IV
Accidental second IV, will definitely affect the DV
