# Influential wine critics such as Robert Parker publish their personal ratings of wines, and many consumers pay close attention. Do

## Question:

(a) Does the scatterplot of the price of wine on the rating suggest a linear or nonlinear relationship?

(b) Fit a linear regression equation to the data, regressing price on the rating. Does this fitted model make substantive sense?

(c) Create a scatterplot for the log of the price on the rating. Does the relationship seem more suited to regression?

(d) Fit a regression of the log of price on the rating. Does this model provide a better description of the pattern in the data?

(e) Compare the fit of the two models to the data. Can you rely on summary statistics like r2 and se?

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## Step by Step Answer:

**Related Book For**

## Statistics For Business Decision Making And Analysis

**ISBN:** 9780321890269

2nd Edition

**Authors:** Robert Stine, Dean Foster

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