2.2 The Statistical Sommelier: An Introduction to Linear Regression

Quick Question

The plots below show the relationship between two of the independent variables considered by Ashenfelter and the price of wine.

Plot of price vs. average growing season temperature. Plot of price vs. harvest rainfall.

What is the correct relationship between harvest rain, average growing season temperature, and wine prices?

Exercise 1


The plots show a positive trend between average growing season temperature and the wine price. While the trend is less clear between harvest rain and price, there is a slight negative association.