Consider the following to answer the question(s) below:
A small independent organic food store offers a variety of specialty coffees. To determine whether price has an impact on sales, the managers kept track of how many kilograms of each variety of coffee were sold last month. The data, scatterplot and summary statistics are shown below.

-The slope of the estimated regression line that relates the response variable (monthly sales) to the predictor variable (price per kilogram) is
A) 95.47
B) 0.858
C) -4.684
D) -0.858
E) -8.999

Question

Consider the following to answer the question(s) below:
A small independent organic food store offers a variety of specialty coffees. To determine whether price has an impact on sales, the managers kept track of how many kilograms of each variety of coffee were sold last month. The data, scatterplot and summary statistics are shown below.
  
-The slope of the estimated regression line that relates the response variable (monthly sales) to the predictor variable (price per kilogram) is
A) 95.47 
B) 0.858 
C) -4.684 
D) -0.858 
E) -8.999

Quizplus · Accepted Answer

The slope of a regression line indicates the change in the response variable for a one-unit change in the predictor variable. A negative slope, such as -4.684, suggests that as the price per kilogram increases, the monthly sales decrease.

Consider the Following to Answer the Question(s) Below