Answer the following questions based on the figures below. (a) Look at figure (a) above. Is it essentially a bar graph? Explain. No, this is not a bar graph because it does not display any bar heights.Yes, this is a bar graph because there is a "horizontal" axis showing years and a "vertical" axis showing miles per gallon. Yes, this is a bar graph because there are horizontal bars drawn on the road. What are some of the flaws in figure (a) as a bar graph? (Select all that apply.) It labels years on the vertical axis.The data values are not clearly labeled.The years are evenly spaced numerically, but the figure shows the more recent years to be more widely spaced.The ability to correctly compare bar heights visually has been lost. (b) Examine figure (b) above, which shows the same information. Is it essentially a time-series graph? Explain. Yes, it is a time-series graph because individual data values are given.No, this is not a time-series graph because the years are not continuous. Yes, it is a time-series graph showing the years on the x-axis and miles per gallon on the y-axis. In what ways does figure (b) seem to display the information in a clearer manner? (Select all that apply.) You can see how fuel economy standards for new cars have changed over the 8 years shown.The data points are connected together by a single line.Each data point on the graph is labeled with a year in figure (b), but not in figure (a).Everything is to scale and not distorted visually by the use of perspective.

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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Answer the following questions based on the figures below.

(a) Look at figure (a) above. Is it essentially a bar graph? Explain.

No, this is not a bar graph because it does not display any bar heights.Yes, this is a bar graph because there is a "horizontal" axis showing years and a "vertical" axis showing miles per gallon. Yes, this is a bar graph because there are horizontal bars drawn on the road.

What are some of the flaws in figure (a) as a bar graph? (Select all that apply.)

It labels years on the vertical axis.The data values are not clearly labeled.The years are evenly spaced numerically, but the figure shows the more recent years to be more widely spaced.The ability to correctly compare bar heights visually has been lost.

(b) Examine figure (b) above, which shows the same information. Is it essentially a time-series graph? Explain.

Yes, it is a time-series graph because individual data values are given.No, this is not a time-series graph because the years are not continuous. Yes, it is a time-series graph showing the years on the x-axis and miles per gallon on the y-axis.

In what ways does figure (b) seem to display the information in a clearer manner? (Select all that apply.)

You can see how fuel economy standards for new cars have changed over the 8 years shown.The data points are connected together by a single line.Each data point on the graph is labeled with a year in figure (b), but not in figure (a).Everything is to scale and not distorted visually by the use of perspective.

(a) Fuel Economy Standards for Autos
1978
'79
80
¹84
'85
"81
$82
'83
18 19 20
22
Fuel Economy Standards for Autos
Set by Congress and supplemented by the
24 Transportation Department. In miles per gallon.
26
27
27%2

(b) REQUIRED FUEL ECONOMY STANDARDS:
NEW CARS BUILT FROM 1978 TO 1985
26
27 27.5
Miles per gallon
18 19
20
22
24
19.1 mpg, expected
average for all cars, 1985
13.7 mpg, average
for all cars, 1978
1978 79 80 81
'82 83 84 85

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