Question

select the correct answer from each drop-down menu.

in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. in the experimental design, the amount of calcium is choose an answer variable. the risk of bone fractures is choose an answer variable.

Explanation:

Identify the manipulated factor

In this study, Dr. Travis is investigating how changing the amount of calcium intake affects osteoporosis. The factor that the researcher deliberately changes or manipulates is the Independent Variable. Therefore, the amount of calcium is an independent variable.

Identify the measured outcome

The researcher measures the risk of bone fractures to see how it responds to changes in calcium intake. The factor that is measured or observed as a result of the manipulation is the Dependent Variable. Thus, the risk of bone fractures is a dependent variable.

Answer:

In an experimental design, the amount of calcium is <blank>an independent</blank> variable. The risk of bone fractures is <blank>a dependent</blank> variable.