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Ordinal and Disordinal With ANOVA, we can establish the nature of the interaction between two treatments No interaction Ordinal Interaction ~ effects of.

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Presentation on theme: "Ordinal and Disordinal With ANOVA, we can establish the nature of the interaction between two treatments No interaction Ordinal Interaction ~ effects of."— Presentation transcript:

1 Ordinal and Disordinal With ANOVA, we can establish the nature of the interaction between two treatments No interaction Ordinal Interaction ~ effects of treatment are not equal across all levels of another treatment...but magnitude is in the same direction

2 Ordinal and Disordinal With ANOVA, we can establish the nature of the interaction between two treatments Disordinal Interaction ~ Effects of one treatment are positive for some levels and negative for other levels of the other treatment

3 Gráfico das médias. Interação Ordinal e Não Ordinal

4 Interaction effects and type: none Permissible to interpret main effects? Yes

5 Interaction effects and type: slight tendency – ordinal interaction Permissible to interpret main effects? Yes

6 Interaction effects and type: yes, disordinal interaction Permissible to interpret main effects? No

7 Interaction effects and type: yes, disordinal interaction Permissible to interpret main effects? No

8 Interaction effects and type: yes, ordinal interaction Permissible to interpret main effects? Yes

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