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Tour de France 2014 We met the Tour de France data set in
Chapter 8, Problem 46E(choose chapter or problem)
Problem 46E
Tour de France 2014 We met the Tour de France data set in Chapter 1 (in Just Checking). One hundred years ago, the fastest rider finished the course at an average speed of about 25.3 kph (around 15.8 mph). By the 21st century, riders were averaging over 40 kph (nearly 25 mph).
a) Make a scatterplot of Avg Speed against Year. Describe the relationship of Avg Speed by Year, being careful to point out any unusual features in the plot.
b) Find the regression equation of Avg Speed on Year.
c) Are the conditions for regression met? Comment.
Questions & Answers
QUESTION:
Problem 46E
Tour de France 2014 We met the Tour de France data set in Chapter 1 (in Just Checking). One hundred years ago, the fastest rider finished the course at an average speed of about 25.3 kph (around 15.8 mph). By the 21st century, riders were averaging over 40 kph (nearly 25 mph).
a) Make a scatterplot of Avg Speed against Year. Describe the relationship of Avg Speed by Year, being careful to point out any unusual features in the plot.
b) Find the regression equation of Avg Speed on Year.
c) Are the conditions for regression met? Comment.
ANSWER:
Problem 46E
Tour de France 2014 We met the Tour de France data set in Chapter 1 (in Just Checking). One hundred years ago, the fastest rider finished the course at an average speed of about 25.3 kph (around 15.8 mph). By the 21st century, riders were averaging over 40 kph (nearly 25 mph).
a) Make a scatterplot of Avg. Speed against Year. Describe the relationship of Avg Speed by Year, being careful to point out any unusual features in the plot.
b) Find the regression equation of Avg Speed on Year.
c) Are the conditions for regression met? Comment.
Step by Step Solution
Step 1 of 6
The speed of the fastest rider before 100 years ago is 25.3 kph.
The speed of the fastest rider in the 21st century is 40 kph.