In the context of these research questions, we need to identify whether the variables being analyzed are independent or dependent. Here’s how each question fits:
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On average, do women perform better on their statistics final than men?
- Dependent Variable: Statistic final scores
- Independent Variable: Gender (women vs. men)
- Conclusion: Gender (independent variable) is compared to final scores (dependent variable).
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On average, is there a difference in people’s blood pressure before and after giving a speech?
- Dependent Variable: Blood pressure measurements
- Independent Variable: Time of measurement (before vs. after the speech)
- Conclusion: Measurement timing (independent variable) affects blood pressure (dependent variable).
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At a specific restaurant, is the average tip percent greater for supper than lunch?
- Dependent Variable: Average tip percent
- Independent Variable: Meal time (supper vs. lunch)
- Conclusion: Meal time (independent variable) influences tip percent (dependent variable).
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On average, are Americans more stressed compared to the French?
- Dependent Variable: Stress test results
- Independent Variable: Nationality (Americans vs. French)
- Conclusion: Nationality (independent variable) is linked to stress levels (dependent variable).
In summary:
- Independent variables: Gender, Time of measurement, Meal time, Nationality
- Dependent variables: Statistics final scores, Blood pressure, Tip percent, Stress test results
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