Which of the following statements best describes the independent and dependent variables in the following experiment?
A researcher wants to test the effect of different fertilizers on the growth of tomato plants. The researcher randomly assigns 100 tomato plants to four groups: a control group with no fertilizer, a group with fertilizer A, a group with fertilizer B, and a group with fertilizer C. The researcher measures the height of each tomato plant after six weeks.
(1 point)
Responses
Independent variable: height of tomato plants; dependent variable: type of fertilizer.
Independent variable: height of tomato plants; dependent variable: type of fertilizer.
Independent variable: type of fertilizer; dependent variable: height of tomato plants.
Independent variable: type of fertilizer; dependent variable: height of tomato plants.
Independent variable: time; dependent variable: height of tomato plants.
Independent variable: time; dependent variable: height of tomato plants.
Independent variable: number of tomato plants; dependent variable: type of fertilizer.
1 answer
1 answer