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In a brief one- to three-sentence answer, state which specific statistical test a researcher should use to analyze data from a study where participants are randomly assigned to consume water, black tea, or coffee before their reaction time is measured. Briefly explain how these variables meet the requirements of the test.
Question: In a brief one- to three-sentence answer, state which specific statistical test a researcher should use to analyze data from a study where participants are randomly assigned to consume water, black tea, or coffee before their reaction time is measured. Briefly explain how these variables meet the requirements of the test.
Sample answer: The researcher should use a one-way ANOVA to analyze the reaction time data. This test is required because the researcher is comparing the means of more than two samples (water, black tea, and coffee groups) using a single independent variable manipulated across multiple independent groups in a between-subjects design.
Key points:
- Identifies the one-way ANOVA as the appropriate statistical test.
- Applies the test's criteria by noting the comparison of means across more than two samples (the three beverage groups).
- Confirms the application of a single independent variable across multiple independent groups in a between-subjects design.
Rubric: A correct answer will identify the one-way ANOVA and briefly apply the test's criteria to the three independent beverage groups.
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Research Methods in Psychology - 4th American Edition @ KPU
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In a brief one- to three-sentence answer, state which specific statistical test a researcher should use to analyze data from a study where participants are randomly assigned to consume water, black tea, or coffee before their reaction time is measured. Briefly explain how these variables meet the requirements of the test.