STATISTICAL TECHNIQUES AND TOOLS
ANALYSIS OF VARIANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Determine whether the following scenario should use a one-way ANOVA test or two-way ANOVA test:A group of psychiatric patients are trying three different therapies:counseling, medication and biofeedback. They want to see if one therapy is better than the others.
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one-way ANOVA test
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two-way ANOVA test
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -One can use a two-way ANOVA test to check the effect of two factors on a dependent variable and if there is any interaction effect between the two. For example, a farmer can test the effect of fertilizer and watering frequency on the crop yield they get to harvest.
Detailed explanation-2: -Post-hoc testing ANOVA will tell you if there are differences among the levels of the independent variable, but not which differences are significant. To find how the treatment levels differ from one another, perform a TukeyHSD (Tukey’s Honestly-Significant Difference) post-hoc test.
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