Concept explainers
a.
To find a regression equation for the data without the predicted value.
a.
Answer to Problem 61STP
Explanation of Solution
Given:
The graph shows how much Americans spent on doctors' visits in some recent years and a prediction for 2014.
Calculation:
The regression equation is
b.
To use your equation to predict the expenditures for 2014.
b.
Answer to Problem 61STP
Explanation of Solution
Given:
The graph shows how much Americans spent on doctors' visits in some recent years and a prediction for 2014.
Calculation:
The expenditures for 2014 are calculated as follows-
c.
To compare your prediction to the one given in the graph.
c.
Explanation of Solution
Given:
The graph shows how much Americans spent on doctors' visits in some recent years and a prediction for 2014.
Calculation:
The value predicted by the equation is significantly lower than the one given in the graph.
Chapter 4 Solutions
Algebra 2
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