Think back to the bean plant experiment you read about earlier. The student’s hypothesis stated, “If bean plants are grown in green light, they will grow taller, because bean plants are green.” Which of the following variables is the dependent variable?

The dependent variable is what the student measures to see whether the light affects plant growth. Here, the student would measure the bean plant’s height, so the dependent variable is the height of the bean plant. The type of light received is the independent variable because it is what changes.

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