Miss Castellana's Graphing Hints
Example: Miss Castellana wanted to study the influence of temperature on plant growth. She set up 5 aquariums. Each aquarium contained three plants. Heat lamps were assembled facing into the tanks. Miss Castellana adjusted the temperature in each tank by adjusting the intensity of the heat lamps. The growth of each plant was measured and recorded everyday for two weeks.
What is the independent variable in her experiment? (Hint: What did Miss C deliberately change in the experiment?) The temperature!
What is the dependent variable? (Hint: What factor changed as a result of the independent variable?) What happened as a result of Miss C changing the temperature? The plants grew different amounts. This is your dependent variable - GROWTH!