Introduction To Statistics And Data Analysis
6th Edition
ISBN: 9781337793612
Author: PECK, Roxy.
Publisher: Cengage Learning,
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Textbook Question
Chapter 4.3, Problem 35E
The report “Most Licensed Drivers Age 85+: States” (bloom berg.com/graphics/best-and-worst/#most-licensed-drivers-age-85-plus-states, retrieved April 20, 2017) gives the percentage of drivers in each state and the District of Columbia in 2011 who were over 85 years of age.
- a. Find the values of the
median , the lowerquartile , and the upper quartile. - b. The largest value in the data set is 5 .10% (Connecticut). Is this state an outlier? (Hint: See Example 4.11.)
- c. Construct a modified boxplot for this data set and comment on the interesting features of the plot. How would you describe the shape of the distribution if you don’t consider the outlier?
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The average number of minutes Americans commute to work is 27.7 minutes (Sterling's Best Places, April 13, 2012). The average commute time in minutes for 48 cities are as follows:
Click on the datafile logo to reference the data.
DATA file
Albuquerque
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Jacksonville
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Phoenix
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Atlanta
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Richmond
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Charlotte
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Louisville
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25.8
Chicago
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Memphis
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Salt Lake City
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28.5
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28.1
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Detroit
29.3
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24.4
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22.0
Tucson
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a. What is the mean commute time for…
Morningstar tracks the total return for a large number of mutual funds. The following table shows the total return and the number of funds for four categories of mutual funds.
Click on the datafile logo to reference the data.
DATA file
Type of Fund
Domestic Equity
Number of Funds
Total Return (%)
9191
4.65
International Equity
2621
18.15
Hybrid
1419
2900
11.36
6.75
Specialty Stock
a. Using the number of funds as weights, compute the weighted average total return for these mutual funds. (to 2 decimals)
%
b. Is there any difficulty associated with using the "number of funds" as the weights in computing the weighted average total return in part (a)? Discuss. What else might be used for weights?
The input in the box below will not be graded, but may be reviewed and considered by your instructor.
c. Suppose you invested $10,000 in this group of mutual funds and diversified the investment by placing $2000 in Domestic Equity funds, $4000 in International Equity funds, $3000 in Specialty Stock…
Chapter 4 Solutions
Introduction To Statistics And Data Analysis
Ch. 4.1 - The following are the prices (in dollars) of the...Ch. 4.1 - The article Caffeine Content of Drinks...Ch. 4.1 - Consumer Reports Health...Ch. 4.1 - Consumer Reports Health...Ch. 4.1 - The article The Wedding Industrys Pricey Little...Ch. 4.1 - The state of California defines family income...Ch. 4.1 - The report State of the News Media 2015 (Pew...Ch. 4.1 - Each student in a sample of 20 seniors at a...Ch. 4.1 - The U.S. Department of Transportation reported the...Ch. 4.1 - The ministry of Health and Long-Term Care in...
Ch. 4.1 - Houses in California are expensive, especially on...Ch. 4.1 - Consider the following statement: More than 65% of...Ch. 4.1 - A sample consisting of four pieces of luggage was...Ch. 4.1 - Suppose that 10 patients with meningitis received...Ch. 4.1 - A study of the lifetime (in hours) for a certain...Ch. 4.1 - An instructor has graded 19 exam papers submitted...Ch. 4.2 - The following data are costs (in cents) per ounce...Ch. 4.2 - Cost per serving (in cents) for six high-fiber...Ch. 4.2 - Combining the cost-per-serving data for high-fiber...Ch. 4.2 - Prob. 20ECh. 4.2 - The accompanying data are consistent with summary...Ch. 4.2 - The paper referenced in the previous exercise also...Ch. 4.2 - The price (in dollars) of the eight smart phones...Ch. 4.2 - In addition to the prices of the highly rated...Ch. 4.2 - In an experiment to assess the effect of listening...Ch. 4.2 - The paper referenced in the previous exercise also...Ch. 4.2 - The accompanying data on number of minutes used...Ch. 4.2 - Give two sets of five numbers that have the same...Ch. 4.2 - Morningstar is an investment research from that...Ch. 4.2 - The U.S. Department of Transportation reported the...Ch. 4.2 - The Ministry of Health and Long-Term Care in...Ch. 4.2 - In 1997, a woman sued a computer keyboard...Ch. 4.2 - The standard deviation alone does not measure...Ch. 4.3 - Based on a large national sample of working...Ch. 4.3 - The report Most Licensed Drivers Age 85+: States...Ch. 4.3 - Data on the gasoline tax per gallon (in cents) in...Ch. 4.3 - The U.S. Department of Health and Human Services...Ch. 4.3 - Fiber content (in grns per serving) for 18 high...Ch. 4.3 - In addition to the fiber contents given in the...Ch. 4.3 - Use the fiber content and sugar content data given...Ch. 4.3 - The article The Bestand WorstPlaces to be a...Ch. 4.4 - The average playing time of music albums in a...Ch. 4.4 - In a study investigating the effect of car speed...Ch. 4.4 - The U.S. Census Bureau (2000 census) reported the...Ch. 4.4 - For the travel time distribution given in the...Ch. 4.4 - Use the information given in the previous two...Ch. 4.4 - Mobile homes are tightly constructed for energy...Ch. 4.4 - The article Impact of Berkeley Excise Tax on...Ch. 4.4 - A student took two national aptitude tests. The...Ch. 4.4 - Suppose that your younger sister is applying for...Ch. 4.4 - The report Who Borrows Most? Bachelors Degree...Ch. 4.4 - The paper Study of the Flying Ability of...Ch. 4.4 - Suppose that the manufacturer of a scale claims...Ch. 4.4 - Suppose that your statistics professor returned...Ch. 4.4 - The paper Answer Changing in Multiple Choice...Ch. 4.4 - Suppose that the average reading speed of students...Ch. 4.4 - The following data values are 2014 per capita...Ch. 4.4 - The accompanying table gives the mean and standard...Ch. 4.5 - The authors of the paper Delayed Time to...Ch. 4.5 - The paper Portable Social Groups: Willingness to...Ch. 4 - Acrylamide (a possible cancer-causing substance)...Ch. 4 - Prob. 62CRCh. 4 - Because some homes have selling prices that are...Ch. 4 - Although bats are not known for their eyesight,...Ch. 4 - For the data in the previous exercise, subtract 10...Ch. 4 - For the data of Exercise 4.64, multiply each data...Ch. 4 - The Bloomberg web site included the data in the...Ch. 4 - Refer to the data given in the previous exercise....Ch. 4 - Age at diagnosis for each of 20 patients under...Ch. 4 - Suppose that the distribution of scores on an exam...
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