1. What is a control group?
2. Tommy tests whether a new brand of "weight control" dog food will help his 4 dogs lose weight. First he weighs all 4 dogs. Then for 1 month he gives two dogs the diet food, and two dogs regular food using the same amount for both groups. After a month he weighs them again.
- What is the independent variable?
- What is the dependent variable?
- Which is the control group?