8. Perform a two-way analysis of variance of Rating by Vehicle Type and Manufacturer. Use economy cars from the United States as the baseline group. (4) Summarize your model: (6) Show profile plot of the estimated model. Does the profile plot suggest the presence of an interaction? (c) Are these data compatible with the assumptions of an ANOVA regression? (d) If appropriate, which effects are statistically significant? Show that the estimated rating from the model for premium cars from Asia matches the average rating of cars in this group. 10. Interpret the results of this model. How does the two-way analysis change your interpretation of the results found in Question 7? ETT PACKARD
Added by Sarah R.
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This means that we will compare the ratings of different types of cars (economy, premium, etc.) from different manufacturers (US, Asia, etc.) while keeping the ratings of economy cars from the US as the reference point. We will use ANOVA to analyze the data. Show more…
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