c. About what percentage of alligators had fish as the primary food choice? 40% 35% 45% 42% d. This type of bar graph, with categories listed in order of frequency, has a special name. What is it?

MATLAB: An Introduction with Applications
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5.

In 2012 in the United States, most electricity was generated from coal (37%), natural gas (30%), or nuclear power plants (19%). Hydropower accounted for 7% of the total electricity produced; other
renewable sources such as wind or solar power accounted for 5%. Other nonrenewable sources (such as petroleum) made up the remaining 2%. Complete parts a through d below.
a. Display the information in a bar graph. The bars, from left to right, represent coal, natural gas, nuclear power, hydropower, wind or solar, and other nonrenewable sources. Choose the correct
graph below.
O C.
40-
30-
20-
10-
40-
30-
.....
Electricity Source
20-
10-
Electricity Source
0-
b. Which is easier to sketch relatively accurately, a pie chart or a bar chart?
Percent
40-
30-
20-
10-
40-
30-
20-
10-
0-
Electricity Source
...
1
Electricity Source
A. A pie chart is easier because estimating the sizes of the slices in a pie chart is easier than estimating the heights of the bars in a bar graph.
B. A bar chart is easier because sketching the exact percentages is more challenging in a pie chart.
C. A bar chart is easier because the bars are always in decreasing order of category percentages, which makes comparisons of categories easier.
D. A pie chart is easier because a pie chart has one shape (a circle), which is easier to graph more accurately than a bar graph, which has multiple shapes (multiple rectangles).
Transcribed Image Text:In 2012 in the United States, most electricity was generated from coal (37%), natural gas (30%), or nuclear power plants (19%). Hydropower accounted for 7% of the total electricity produced; other renewable sources such as wind or solar power accounted for 5%. Other nonrenewable sources (such as petroleum) made up the remaining 2%. Complete parts a through d below. a. Display the information in a bar graph. The bars, from left to right, represent coal, natural gas, nuclear power, hydropower, wind or solar, and other nonrenewable sources. Choose the correct graph below. O C. 40- 30- 20- 10- 40- 30- ..... Electricity Source 20- 10- Electricity Source 0- b. Which is easier to sketch relatively accurately, a pie chart or a bar chart? Percent 40- 30- 20- 10- 40- 30- 20- 10- 0- Electricity Source ... 1 Electricity Source A. A pie chart is easier because estimating the sizes of the slices in a pie chart is easier than estimating the heights of the bars in a bar graph. B. A bar chart is easier because sketching the exact percentages is more challenging in a pie chart. C. A bar chart is easier because the bars are always in decreasing order of category percentages, which makes comparisons of categories easier. D. A pie chart is easier because a pie chart has one shape (a circle), which is easier to graph more accurately than a bar graph, which has multiple shapes (multiple rectangles).
The accompanying bar graph is from a study investigating the factors that influence alligators' choice of food. For 219 alligators captured in four
different lakes, researchers classified the primary food choice (in volume) found in the alligator's stomach in one of the categories-fish, invertebrate,
reptile, bird, or other.
Use the bar graph to complete parts a through d.
Other
Reptile
Fish
Bird
c. About what percentage of alligators had fish as the primary food choice?
40%
35%
45%
42%
d. This type of bar graph, with categories listed in order of frequency, has a special name. What is it?
Histogram
Stem-and-leaf plot
Pie chart
Dot plot
Pareto chart
Percentage
50-
40-
30-
20-
10+
0-
Other Reptile Bird
Primary Food Choice of Alligators
Fish Invert
+
F
Transcribed Image Text:The accompanying bar graph is from a study investigating the factors that influence alligators' choice of food. For 219 alligators captured in four different lakes, researchers classified the primary food choice (in volume) found in the alligator's stomach in one of the categories-fish, invertebrate, reptile, bird, or other. Use the bar graph to complete parts a through d. Other Reptile Fish Bird c. About what percentage of alligators had fish as the primary food choice? 40% 35% 45% 42% d. This type of bar graph, with categories listed in order of frequency, has a special name. What is it? Histogram Stem-and-leaf plot Pie chart Dot plot Pareto chart Percentage 50- 40- 30- 20- 10+ 0- Other Reptile Bird Primary Food Choice of Alligators Fish Invert + F
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