Concept explainers
a.
Make a
a.
Answer to Problem 9PPS
Explanation of Solution
Given information:
The table at the right shows the total attendance for the Florida Marlins in some recent years.
Make a scatter plot of the data.
Calculation: The objective is to make a scatter plot of the data.
The scatter plot is drawn below.
b.
Find a regression equation for the data.
b.
Answer to Problem 9PPS
Explanation of Solution
Given information:
The table at the right shows the total attendance for the Florida Marlins in some recent years.
Find a regression equation for the data.
Calculation:
The objective is to use a graphing calculator to find an equation.
In the graphing calculator, press
And in the
Then select
Hence, the equation is
c.
Predict the attendance in
c.
Answer to Problem 9PPS
Explanation of Solution
Given information:
The table at the right shows the total attendance for the Florida Marlins in some recent years.
Predict the attendance in
Calculation:
The objective is to predict the value in
In the graphing calculator, copy the regression equation in
Then use VALUE on the CALC menu to find the value of
Hence, the value is
d.
How reasonable is your prediction?
d.
Answer to Problem 9PPS
The prediction is unreasonable.
Explanation of Solution
Given information:
The table at the right shows the total attendance for the Florida Marlins in some recent years.
How reasonable is your prediction? Explain.
Calculation:
The prediction is unreasonable. The attendance will not increase without bound because attendance is largely dependent on the team’s winning status.
Hence, the prediction is unreasonable.
Chapter 2 Solutions
Algebra 2
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