Independent and Dependent Variables

1. Define independent and dependent variables in your own words. Give an original example of each that is different from the examples in the video.

2. A researcher is studying the effect of the amount of studying on test scores. They collect data from students about how many hours they studied and their resulting test scores. Identify the independent and dependent variables in this study.

3. A student hypothesizes that the amount of fertilizer used will affect the number of tomatoes produced by a tomato plant. Design an experiment to test this hypothesis, identifying the independent and dependent variables. What are some factors that should be controlled in this experiment?