Suppose a scientist was studying the factors that affect the growth of human ski

Question

Suppose a scientist was studying the factors that affect the growth of human skin cells. She hypothesizes that skin cells grow best when exposed to moderate amounts of sunlight over a 24 hours period. She then designs and runs an experiment to test her hypothesis by exposing random groups of people to varying amounts of sunlight, ranging from no sunlight at all to full exposure. What is the dependent variable in this experiment?

The amount of sunlight the groups were exposed to

The growth of the skin cells

The group of test subjects not exposed to any sunlight

None of the above are the dependent variable

The amount of sunlight the groups were exposed to

The growth of the skin cells

The group of test subjects not exposed to any sunlight

None of the above are the dependent variable

Explanation / Answer

The growth of skin cells is the dependent variable here as it depends on other independent variables such as amount of sunlight.

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