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Question: The means of each group of a two-way analysis of variance for two independent variables are plotted and shown in the three graphs. Which of these represents a disordinal interaction? Consider the interaction to be significant.



A ) Both graph 1 and graph 2
B ) Graph 1
C ) Graph 3
D ) Graph 2

Steps to derive

1 In a disordinal interaction, the lines cross each other and an intersection occurs and the interaction is significant.

2 In the above 3 graphs, graph 1 satisfies this condition.

3 So, graph 1 represents a disordinal interaction.



Hence the right answer is Option B

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