Question

why is it important to have a control group? * 2 points
your answer
a student tests whether fertilizer increases tomato production. what is * 3 points
the independent variable?
□ fertilizer
□ tomato production
□ constant
a student tests whether fertilizer increases tomato production. what is * 3 points
the dependent variable?
□ fertilizer
□ tomato production
□ constant

Explanation:

A control group is important in an experiment as it serves as a baseline. It is not exposed to the independent - variable being tested. By comparing the experimental group (exposed to the independent variable) to the control group, researchers can determine if the independent variable has an effect. In the experiment testing whether fertilizer increases tomato production, the independent variable is the factor that the experimenter manipulates, which is the fertilizer. The dependent variable is the outcome that is measured and is affected by the independent variable, which is tomato production.

Answer:

1. A control group provides a baseline for comparison to determine the effect of the independent variable.
2. Fertilizer
3. Tomato Production