2-Way ANOVA Flashcards

1
Q

Why do we use a 2-way ANOVA?

A

Compares means of dependent variables between groups constructed from 2 independent variables

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2
Q

What are the assumptions?

A

Samples come from a normal population (box plot), Equal population variance (IQR, Levene’s test), Means plots (interaction or no interaction)

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3
Q

If there is no interaction, do we use main or simple effects?

A

Main

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4
Q

If there is interaction, do we use main or simple effects?

A

Simple

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5
Q

Hypotheses for 2 Way ANOVA?

A

H0: _____ (independent variable), and ________ (independent variable) do not interact to affect mean _____ (dependent variable).

Ha: ______ and ______ interact to affect mean _______

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6
Q

What values do we report in a 2 way ANOVA?

A

Test statistic (F), p-value

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7
Q

Conclusion for 2 way ANOVA?

A

There is/isn’t sufficient evidence to support that ___ and ___ affect the mean ______. We reject/fail to reject H0.

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