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Questions and Answers
What is an example of an independent variable in an experiment testing the effect of a vitamin on life expectancy?
What is an example of an independent variable in an experiment testing the effect of a vitamin on life expectancy?
- Amount of vitamin (correct)
- Type of subjects
- Life span
- Duration of experiment
What is the dependent variable in the vitamin experiment?
What is the dependent variable in the vitamin experiment?
Life span
In the study of a drug's impact on cancer, what is the independent variable?
In the study of a drug's impact on cancer, what is the independent variable?
- Duration of study
- Type of cancer
- Administration of the drug (correct)
- Impact on cancer
What is the dependent variable in the drug's impact on cancer study?
What is the dependent variable in the drug's impact on cancer study?
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Study Notes
Independent Variables
- Independent variables are manipulated or changed by researchers in an experiment to observe effects on dependent variables.
- In an experiment testing vitamins for life expectancy, the independent variable is the dosage of the vitamin administered to participants.
- Administration of a drug in a cancer study is another example of an independent variable.
Dependent Variables
- Dependent variables are outcomes measured in an experiment that are influenced by changes in independent variables.
- For the vitamin life expectancy experiment, the dependent variable is the resulting life span of the subjects.
- In the cancer drug study, the dependent variable is the effect of the drug on the progression of cancer.
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