Loose Leaf for Elementary Statistics: A Step By Step Approach
10th Edition
ISBN: 9781260152821
Author: Bluman, Allan G.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 2.3, Problem 1AC
Applying the Concepts 2–3
Causes of Accidental Deaths in the United States, 1999–2009
The graph shows the number of deaths in the United States due to accidents. Answer the following questions about the graph.
1. Name the variables used in the graph.
2. Are the variables qualitative or quantitative?
3. What type of graph is used here?
4. Which variable shows a decrease in the number of deaths over the years?
5. Which variable or variables show an increase in the number of deaths over the years?
6. The number of deaths in which variable remains about the same over the years?
7. List the approximate number of deaths for each category for the year 2001.
8. In 1999, which variable accounted for the most deaths? In 2009, which variable accounted for the most deaths?
9. In what year were the numbers of deaths from poisoning and falls about the same?
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Examine the Variables: Carefully review and note the names of all variables in the dataset. Examples of these variables include:
Mileage (mpg)
Number of Cylinders (cyl)
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Research: Google to understand these variables.
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Mean
Median
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Second Quartile (Q2)
Third Quartile (Q3)
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Document Your Results:
In RStudio: Before running each statistical test, provide a heading in the format shown at the bottom. “# Mean of mileage – Your name’s command”
In Microsoft Word: Once you've completed all tests, take a screenshot of your results in RStudio and paste it into a Microsoft Word document. Make sure that snapshots are very clear. You will need multiple snapshots. Also transfer these results to the…
Examine the Variables: Carefully review and note the names of all variables in the dataset. Examples of these variables include:
Mileage (mpg)
Number of Cylinders (cyl)
Displacement (disp)
Horsepower (hp)
Research: Google to understand these variables.
Statistical Analysis: Select mpg variable, and perform the following statistical tests. Once you are done with these tests using mpg variable, repeat the same with hp
Mean
Median
First Quartile (Q1)
Second Quartile (Q2)
Third Quartile (Q3)
Fourth Quartile (Q4)
10th Percentile
70th Percentile
Skewness
Kurtosis
Document Your Results:
In RStudio: Before running each statistical test, provide a heading in the format shown at the bottom. “# Mean of mileage – Your name’s command”
In Microsoft Word: Once you've completed all tests, take a screenshot of your results in RStudio and paste it into a Microsoft Word document. Make sure that snapshots are very clear. You will need multiple snapshots. Also transfer these results to the…
2 (VaR and ES) Suppose X1
are independent. Prove that
~
Unif[-0.5, 0.5] and X2
VaRa (X1X2) < VaRa(X1) + VaRa (X2).
~
Unif[-0.5, 0.5]
Chapter 2 Solutions
Loose Leaf for Elementary Statistics: A Step By Step Approach
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