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Business Statistics A First Course 7th Global Edition Kathryn A. Szabat, David M. Levine, David F. Stephan - Solutions
Is EndRun’s claim about having more winners than losers a fair and accurate reflection of the quality of its investment service? If you do not think that the claim is a fair and accurate one, provide an alternate presentation that you think is fair and accurate.
how does the presentation of the general information about EndRun in this guide affect your perception of the business?
on page 98 concerning the weights of Boston and Vermont shingles, write a report that evaluates whether the weights of the pallets of the two types of shingles are what the company expects. Be sure to incorporate tables and charts into the report.
Referring to the results from problem
(Class Project) Cross-classify each student in the class by gender (male, female) and current employment status (yes, no), so that the instructor can tally the results.a. Construct a table with either row or column percentages, depending on which you think is more informative.b. What would you
(Class Project) have each student in the class respond to the question “Which carbonated soft drink do you most prefer?”so that the instructor can tally the results into a summary table.a. Convert the data to percentages and construct a pareto chart.b. Analyze the findings.
A/B testing is a method used by businesses to test different designs and formats of a web page to determine if a new web page is more effective than a current web page. Web designers tested a new call to action button on its web page. Every visitor to the web page was randomly shown either the
The file Currency contains the exchange rates of the Canadian dollar, the Japanese yen, and the English pound from 1980 to 2013, where the Canadian dollar, the Japanese yen, and the English pound are expressed in units per U.S. dollar.a. Construct time-series plots for the yearly closing values of
The following data (stored in Drink ) represent the amount of soft drink in a sample of 50 consecutively filled 2-liter bottles.The results are listed horizontally in the order of being filled:a. Construct a time-series plot for the amount of soft drink on the Y axis and the bottle number (going
The file natural gas contains the monthly average wellhead and residential prices for natural gas (dollars per thousand cubic feet)in the United States from January 1, 2008, to January 1, 2013. (Data extracted from “U.S. Natural Gas prices,” 1.usa.gov/qHDWNz, March 1, 2013.) For the wellhead
The file protein contains calorie and cholesterol information for popular protein foods (fresh red meats, poultry, and fish).Source: U.S. Department of Agriculture.a. Construct a percentage histogram for the number of calories.b. Construct a percentage histogram for the amount of cholesterol.c.
What was the average price of a room at two-star, three-star, and four-star hotels around the world during the first half of 2013? The file hotelprices contains the prices in English pounds, (about US$1.52 as of July 2013). (Data extracted from “hotel price Index,”
Studies conducted by a manufacturer of Boston and Vermont asphalt shingles have shown product weight to be a major factor in customers’ perception of quality. Moreover, the weight represents the amount of raw materials being used and is therefore very important to the company from a cost
The file CeO-Compensation includes the total compensation (in $millions) for CEOs of 170 large public companies and the investment return in 2012. (Data extracted from “CEO pay Skyrockets as Economy, Stocks Recover,” USA Today, March 27, 2013, p. B1.) For total compensation:a. Construct a
The file CDrate contains the yields for one-year certificates of deposit (CDs) and a five-year CDs for 22 banks in the United States, as of March 12, 2014.Source: Data extracted and compiled from www.Bankrate.com, March 12, 2014.a. Construct a stem-and-leaf display for one-year CDs and fiveyear
The file CigaretteTax contains the state cigarette tax ($) for each state as of January 1, 2014.a. Construct an ordered array.b. plot a percentage histogram.c. What conclusions can you reach about the differences in the state cigarette tax between the states?
The file Domesticbeer contains the percentage alcohol, number of calories per 12 ounces, and number of carbohydrates(in grams) per 12 ounces for 156 of the best selling domestic beers in the United States.Source: Data extracted from www.beer100.com/beercalories.htm, March 12, 2014.a. Construct a
One of the major measures of the quality of service provided by an organization is the speed with which the organization responds to customer complaints. A large family-held department store selling furniture and flooring, including carpet, had undergone a major expansion in the past several years.
The Air Travel Consumer Report, a monthly product of the Department of Transportation’s Office of Aviation Enforcement and proceedings (OAEp), is designed to assist consumers with information on the quality of services provided by airlines. The report includes a summary of consumer complaints by
The following data represent the pounds per capita of fresh food and packaged food consumed in the United States, Japan, and Russia in a recent year:a. For the United States, Japan, and Russia, construct a bar chart, a pie chart, and a pareto chart for different types of fresh foods consumed.b. For
Suppose that the owner of the restaurant in problem 2.91 also wants to study the demand for dessert during the same time period. She decides that in addition to studying whether a dessert was ordered, she will also study the gender of the individual and whether a beef entrée was ordered. Data were
The owner of a restaurant that serves Continental-style entrées has the business objective of learning more about the patterns of patron demand during the Friday-to-Sunday weekend time period. Data were collected from 630 customers on the type of entrée ordered and organized in the following
A survey was completed by senior-level marketers on marketer expectations and perspectives going into the next year for such things as marketing spending levels, media usage, and new business activities. Marketers were asked about how they are most often finding out about new marketing agencies for
The following table represents the market share (in number of movies, gross in millions of dollars, and millions of tickets sold) of each type of movie in 2013:a. Construct a bar chart, a pie chart, and a pareto chart for the number of movies, gross (in $millions), and number of tickets sold (in
The following summary, table, presents the breakdown of the price of a new college textbook:a. Using the four categories of publisher, bookstore, author, and freight, construct a bar chart, a pie chart, and a pareto chart.b. Using the four subcategories of publisher and three subcategories of
What is an ordered array and why is it used?
how can a multidimensional table differ from a two-variable contingency table?
What is the difference between a summary table and a contingency table?
Why does manipulating interactive summarizations help to organize and visualize a set of variables?
What is the difference between a time-series plot and a scatter plot?
Compare and contrast the bar chart for categorical data with the histogram for numerical data.
What are the advantages and disadvantages of using a bar chart, a pie chart, and a pareto chart?
Why would you construct a summary table?
how do histograms and polygons differ in construction and use?
Figures 2.2 and 2.3 show a bar chart and a pie chart for the risk level for the retirement fund data (see page 69).a. Create an exploded pie chart, a doughnut chart, a cone chart, and a pyramid chart that shows the risk level of retirement funds.b. Which graphs do you prefer—the bar chart or pie
Figure 2.1 shows a bar chart and a pie chart for the main reason young adults shop online (see page 68).a. Create an exploded pie chart, a doughnut chart, a cone chart, or a pyramid chart that shows the main reason young adults shop online.b. Which graphs do you prefer—the bar chart or pie chart
professor Deanna Oxender Burgess of Florida Gulf Coast University conducted research on annual reports of corporations (see D. Rosato, “Worried About the Numbers? how About the Charts?” The New York Times, September 15, 2002, p. B7).Burgess found that even slight distortions in a chart changed
Examine the following visualization, adapted from a management consulting white paper.
Examine the following visualization, adapted from one that appeared in the post “Who Are the Comic Book Fans on Facebook?” on February 2, 2013, as reported by graphicspolicy.com.
Examine the following visualization, adapted from one that appeared in a post in a digital marketing blog.
(Student Project) The Data and Story Library (DASL) is an online library of data files and stories that illustrate the use of basic statistical methods. Go to lib.stat.cmu.edu/index.php, click DASL, and explore some of the various graphical displays.a. Select a graphical display that you think does
(Student Project) Bring to class a chart from a website, newspaper, or magazine published this month that you believe to be a poorly drawn representation of a categorical variable. Be prepared to submit the chart to the instructor with comments about why you consider it inappropriate. Do you
(Student Project) Bring to class a chart from a website, newspaper, or magazine published recently that you believe to be a poorly drawn representation of a numerical variable. Be prepared to submit the chart to the instructor with comments about why you believe it is inappropriate. Do you believe
Using the sample of retirement funds stored in retirementFunds :a. Construct a table that tallies type, market cap, and risk.b. Drill down to examine the large cap growth funds with high risk.how many funds are there? What conclusions can you reach about these funds?
Using the sample of retirement funds stored in retirementFunds :a. Construct a table that tallies type, risk, and rating.b. Drill down to examine the growth funds with high risk with a rating of three. how many funds are there? What conclusions can you reach about these funds?
Using the sample of retirement funds stored in retirementFunds :a. Construct a table that tallies market cap, risk, and rating.b. Drill down to examine the large cap funds that are high risk with a rating of three. how many funds are there? What conclusions can you reach about these funds?
Using the sample of retirement funds stored in retirementFunds :a. Construct a table that tallies type, market cap, and rating.b. Drill down to examine the large-cap growth funds with a rating of three. how many funds are there? What conclusions can you reach about these funds?
Sales of automobiles in the United States fluctuate from month to month and year to year. The file autoSales contains the sales for various automakers in July 2013 and the percentage change from June 2013 sales. (Data extracted from “how the Auto Industry Fared in July,” nyti.ms/1nnlCV2.)a.
Your task as a member of the International Strategic Management Team in your company is to investigate the potential for entry into a foreign market. As part of your initial investigation, you must provide an assessment of the economies of countries in the Americas and the Asia and pacific regions.
The annual ranking of the FT Global 500 2013 provides a snapshot of the world’s largest companies. The companies are ranked by market capitalization—the greater the stock market value of a company, the higher the ranking. The market capitalizations (in $billions) and the 52-week change in
The value of a National Basketball Association (NBA) franchise has increased dramatically over the past few years. The value of a franchise varies based on the size of the city in which the team is located, the amount of revenue it receives, and the success of the team. The file nbaValues contains
Using the sample of retirement funds stored in retirementFunds :a. Construct a table that tallies type, market cap, risk, and rating.b. What conclusions can you reach concerning differences among the types of funds based on market cap (small, mid-cap, and large), based on type (growth and value),
Using the sample of retirement funds stored in retirementFunds :a. Construct a table that tallies type, risk, and rating.b. What conclusions can you reach concerning differences among the types of retirement funds (growth and value), based on the risk (low, average, and high), and the rating (one,
Using the sample of retirement funds stored in retirementFunds :a. Construct a table that tallies market cap, risk, and rating.b. What conclusions can you reach concerning differences among the funds based on market cap (small, mid-cap, and large), risk (low, average, and high), and the rating
Using the sample of retirement funds stored in retirementFunds :a. Construct a table that tallies type, market cap, and rating.b. What conclusions can you reach concerning differences among the types of retirement funds (growth and value), based on market cap (small, mid-cap, and large) and the
The file audits contains the number of audits of corporations with assets of more than $250 million conducted by the Internal Revenue Service between 2001 and 2013. (Data extracted from www.irs.gov.)a. Construct a time-series plot.b. What pattern, if any, is present in the data?
The file movie attendance contains the yearly movie attendance (in billions) from 2001 through 2013:a. Construct a time-series plot for the movie attendance (in billions).b. What pattern, if any, is present in the data?
The data in newhomeSales represent number and median sales price of new single-family houses sold in the United States recorded at the end of each month from January 2000 through December 2013. (Data extracted from www.census.gov, February 28, 2014.)a. Construct a time-series plot of new home sales
how have stocks performed in the past? The following table presents the data stored in Stock performance and shows the performance of a broad measure of stocks (by percentage) for each decade from the 1830s through the 2000s:
A pew Research Center survey found that social networking is popular in many nations around the world. The file global Socialmedia contains the level of social media networking (measured as the percentage of individuals polled who use social networking sites) and the GDp at purchasing power parity
College football is big business, with coaches’ pay and revenues in millions of dollars. The file College Football contains the coaches’ total pay and net revenue for college football at 105 schools (Data extracted from “College Football Coaches Continue to See Salary Explosion,” USA Today,
Data were collected on the typical cost of dining at American-cuisine restaurants within a 1-mile walking distance of a hotel located in a large city. The file bundle contains the typical cost (a per transaction cost in $) as well as a Bundle score, a measure of overall popularity and customer
Movie companies need to predict the gross receipts of individual movies once a movie has debuted.The following results, stored in pottermovies , are the first weekend gross, the U.S. gross, and the worldwide gross (in $millions)of the eight harry potter movies:
The following is a series of annual sales (in $millions) over an 11-year period (2003 to 2013):Year: 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013a. Construct a time-series plot.b. Does there appear to be any change in annual sales over time?Explain.
The following is a set of data from a sample of n = 11 items:X: 7 5 8 3 6 0 2 4 9 5 8 Y: 1 5 4 9 8 0 6 2 7 5 4a. Construct a scatter plot.b. Is there a relationship between X and Y? Explain.
The data stored in Drink represents the amount of soft drink in a sample of fifty 2-liter bottles.a. Construct a histogram and a percentage polygon.b. Construct a cumulative percentage polygon.c. On the basis of the results in (a) and (b), does the amount of soft drink filled in the bottles
The file bulbs contains the life (in hours) of a sample of forty 20-watt compact fluorescent light bulbs produced by Manufacturer A and a sample of forty 20-watt compact fluorescent light bulbs produced by Manufacturer B.Use the following class interval widths for each distribution:Manufacturer A:
The manufacturing company in problem 2.44 also produces electric insulators. If the insulators break when in use, a short circuit is likely to occur. To test the strength of the insulators, destructive testing in high-powered labs is carried out to determine how much force is required to break the
A manufacturing company produces steel housings for electrical equipment. The main component part of the housing is a steel trough that is made out of a 14-gauge steel coil. It is produced using a 250-ton progressive punch press with a wipe-down operation that puts two 90-degree forms in the flat
One operation of a mill is to cut pieces of steel into partsautomobile company. The data are collected from a sample of 100 steel parts and stored in Steel . The measurement reported is the difference in inches between the actual length of the steel part, as measured by a laser measurement device,
how do the average credit scores of people living in various cities differ? The file Credit Scores contains an ordered array of the average credit scores of 143 American cities. (Data extracted from usat.ly/17a1fA6.)a. Construct a percentage histogram.b. Construct a cumulative percentage polygon.c.
how much time do Americans living in or near cities spend waiting in traffic, and how much does waiting in traffic cost them per year? The data in the file Congestion include this cost for 31 cities. (Source: Data extracted from “The high Cost of Congestion,” Time, October 17, 2011, p. 18.) For
The following histogram and cumulative percentage polygon visualize the data about the property taxes per capita($) for the 50 states and the District of Columbia, stored in property Taxes .
The file Caffeine contains the caffeine content (in milligrams per ounce) for a sample of 26 energy drinks:Source: Data extracted from “The Buzz on Energy-Drink Caffeine,”Consumer Reports, December 2012.a. Construct an ordered array.b. Construct a stem-and-leaf display
The file nbaCost2013 contains the total cost (in $)for four average-priced tickets, two beers, four soft drinks, four hot dogs, two game programs, two adult-sized caps, and one parking space at each of the 30 National Basketball Association arenas during the 2013–2014 season. (Data extracted
The following is a stem-and-leaf display representing the amount of gasoline purchased, in gallons (with leaves in tenths of gallons), for a sample of 25 cars that use a particular service station on the New Jersey Turnpike: 9 147 10 02238 11 125566777 12 223489 13 02a. Construct an ordered
Construct an ordered array, given the following stem-andleaf display from a sample of n = 7 midterm exam scores in information systems:
Construct a stem-and-leaf display, given the following data from a sample of midterm exam scores in finance:54 69 98 93 53 74
Do social recommendations increase ad effectiveness? A study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. Data were collected on whether
A study of Kickstarter projects showed that 54.2% were successful, that is, achieved its goal and raised at least the targeted goal amount. In an effort to identify network dynamics that influences success, projects were subdivided into projects of owners who had backed other projects before,
A survey of 1,085 adults asked “Do you enjoy shopping for clothing for yourself?” The results indicated that 51%of the females enjoyed shopping for clothing for themselves as compared to 44% of the males. (Data extracted from “Split Decision on Clothes Shopping,” USA Today, January 28,
2.29 Visier’s Survey of Employers explores how North American organizations are solving the challenges of delivering workforce analytics. Employers were asked what would help them be successful with human resources metrics and reports. The responses were as follows (stored in needs ):a. Construct
2.28 The following table indicates the percentage of residential electricity consumption in the United States, in a recent year organized by type of use.a. Construct a bar chart, a pie chart, and a pareto chart.b. Which graphical method do you think is best for portraying these data?c. What
2.27 The Edmunds.com NhTSA Complaints Activity Report contains consumer vehicle complaint submissions by automaker, brand, and category (data extracted from edmu.in/Ybmpuz.)The following tables, stored in automaker1 and automaker2 , represent complaints received by automaker and complaints received
2.26 The Energy Information Administration reported the following sources of electricity in the United States in 2013:a. Construct a pareto chart.b. What percentage of power is derived from coal, nuclear power, or natural gas?
2.25 What do college students do with their time? A survey of 3,000 traditional-age students was taken, with the results as follows:
2.24 An online survey of CFA Institute members was conducted to gather feedback on market sentiment, performance, and market integrity issues in October 2013. Members were asked to indicate the most needed action to improve investor trust and market integrity. The survey results were as follows:a.
2.23 The file Drink contains the following data for the amount of soft drink (in liters) in a sample of fifty 2-liter bottles:a. Construct a cumulative percentage distribution.b. On the basis of the results of (a), does the amount of soft drink filled in the bottles concentrate around specific
2.21 The manufacturing company in problem 2.20 also produces electric insulators. If the insulators break when in use, a short circuit is likely to occur. To test the strength of the insulators, destructive testing in high-powered labs is carried out to determine how much force is required to break
A manufacturing company produces steel housings for electrical equipment. The main component part of the housing is a steel trough that is made out of a 14-gauge steel coil. It is produced using a 250-ton progressive punch press with a wipedown operation that puts two 90-degree forms in the flat
One operation of a mill is to cut pieces of steel into parts that will later be used as the frame for front seats in an automobile. The steel is cut with a diamond saw and requires the resulting parts to be within {0.005 inch of the length specified by the automobile company. Data are collected
how do the average credit scores of people living in different American cities differ? The data in Credit Scores is an ordered array of the average credit scores of 143 American cities. (Data extracted from usat.ly/109hZAR.)a. Construct a frequency distribution and a percentage distribution.b.
how much time do commuters living in or near cities spend waiting in traffic, and how much does this waiting cost them per year? The file Congestion contains the time spent waiting in traffic and the yearly cost associated with that waiting for commuters in 31 U.S. cities. (Source: Data extracted
The file utility contains the following data about the cost of electricity (in $) during July 2014 for a random sample of 50 one-bedroom apartments in a large city.96 171 202 178 147 102 153 197 127 82 157 185 90 116 172 111 148 213 130 165 141 149 206 175 123 128 144 168 109 167 95 163 150 154 130
The file nbaCost2013 contains the total cost ($) for four average-priced tickets, two beers, four soft drinks, four hot dogs, two game programs, two adult-sized caps, and one parking space at each of the 30 National Basketball Association arenas during the 2013–2014 season. These costs were:
million.a. If these values are grouped into six class intervals, indicate the class boundaries.b. What class interval width did you choose?c. What are the six class midpoints?
million to
Data were collected on the Facebook website about the most “liked” fast food brands. The data values (the number of“likes” for each fast food brand) for the brands named ranged from
In November 2013, the National Small Business Association (NSBA) surveyed small business owners with fewer than 500 employees. The purpose of the study was to gain insight into how America’s small businesses are dealing with rising health care costs, what kind of benefits they offer, and how the
Construct an ordered array, given the following data from a sample of midterm exam scores in marketing:88 78 78 73 91 78 85
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