Question

In an experiment I have two groups of flowers, A and B. As a curious scientist I wanted to test the effects of fertilizer on plant growth. Group A was not given any fertilizer, while Group B was given fertilizer. I left all other conditions the same within each group such as amount of water, type of flower, and amount of sunlight. After three weeks of running this experiment I measured the height of each plant. My conclusion was that Group B flowers were taller than Group A flowers. After reading this scenario what is the independent variable?

Answer 1

Answer:

Independent variable: FERTILIZER

Explanation:

The independent variable in an experiment is the variable that is changed or manipulated by the experimenter in order to bring about a measurable response.

In this experiment, the effects of fertilizer on plant growth is tested. Two groups: Group A and B were used. Group A was not given any fertilizer, while Group B was given fertilizer. This portrays that the experimenter is manipulating the FERTILIZER. Hence, the FERTILIZER is the independent variable.