A Well-Educated Lumberjack Decides to Use Linear Regression to Predict

Multiple Choice

A well-educated lumberjack decides to use linear regression to predict the demand for firewood based on the ambient temperature. He has collected data on firewood sales and temperature for the last several days and has performed some preliminary calculations as shown in the table.

-Determine the regression equation based on the data. What is the sample correlation coefficient (R) for the regression equation?

A) 0.976
B) 0.952
C) 0.946
D) -0.976
E) -0.952