Stats Modeling The World 4th Edition David Bock, Paul Velleman, Richard De Veaux - Solutions

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Using the sample of retirement funds stored in< RETIREMENT_FUNDS >:a. Construct a table that tallies type, risk and rating.b. Drill down to examine the growth 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< RETIREMENT_FUNDS >: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< RETIREMENT_FUNDS >: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?
Using the sample of retirement funds stored in< RETIREMENT_FUNDS >: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?
Your task as a member of the International Strategic Management Team at 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 capitalisation—the greater the sharemarket value of a company, the higher the ranking. The market capitalisations (in billions of dollars) and the 52-week change
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 < NBA_VALUES >
Sales of cars in the United States fluctuate from month to month and year to year. The data in the file < AUTO_SALES > represent the sales for various manufacturers in July 2013 and the change from July 2012 sales in percentages. (data obtained from ).a. Construct a treemap of the sales of cars and
Drive-through service time is an important quality attribute for fast-food chains. The data in < SERVICE_TIME > are the mean service times for Burger King, Chick-Fil-A, McDonald’s and Wendy’s in 12 recent years. (data obtained from ).a. Construct sparklines of the mean service times for Burger
From 2006 to 2012, the value of precious metals fluctuated dramatically. The file < METAL_INDICES > contains the total rate of return (as a percentage) for platinum, gold and silver from 2006 through 2012. (data obtained from accessed 29 March 2013).a. Construct sparklines for the annual rate of
The file < STOCK_INDICES > contains the data that represent the total rate of return (as a percentage) for the Dow Jones Industrial Average (DJIA), the Standard & Poor’s 500 (S&P500)and the technology-heavy NASDAQ Composite (NASDAQ) from 2006 through 2012. (data obtained from accessed 29 March
Referring to the movie attendance data between 2002 and 2012 (stored in < MOVIE_ATTENDANCE2 >):a. Construct a sparkline graph for movie attendance between 2002 and 2012.b. What conclusions can you reach about movie attendance between 2002 and 2012?c. When would using a sparkline graph be the better
The file < BB_COST_2012 > contains the total cost (in $) for four tickets, two beers, four soft drinks, four hot dogs, two game programs, two baseball caps and parking for one vehicle at each of the 30 Major League Baseball (MLB) parks during the 2012 season. (data obtained from ).a. Visually
A financial analyst was interested in comparing the price-tobook ratio (P/B) of pharmaceutical companies. The analyst collected P/B ratios for 71 pharmaceutical companies (Industry Group SIC 3 code: 283) and stored them as part of the file< BUSINESS_VALUATION >.a. Visually evaluate the P/B ratios
There is a very large number of mutual funds from which an investor can choose. Each mutual fund has its own mix of different types of investments. The file < BEST_FUNDS1 >contains the one-year return percentage and the three-year annualised return percentage for the 10 best short-term bond and
The Edmunds.com NHTSA Complaints Activity Report is the result of the examination of the frequency, trends and composition of consumer vehicle complaint submissions at the car manufacturer, brand and category levels (data obtained from ). The table below stored in < AUTOMAKER1 >, contains
A general measure of inflation is the annual increase in the consumer price index (CPI). The table below gives the annual increase in the CPI in Australia and New Zealand.< INFLATION_2011_2016 >
The data file < UNEMPLOYMENT_RATE_2007_2017 > gives the monthly Australian unemployment rate (seasonally adjusted)from March 2007 to February 2017.a. Construct a time-series plot for the unemployment rate.b. Does there appear to be any pattern?
Below is a series of real annual sales (in millions of constant 2010 dollars) for a department over an 11-year period (2007 to 2017):Year 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Sales 13.0 17.0 19.0 20.0 20.5 20.5 20.5 20.0 19.0 17.0 13.0a. Construct a time-series plot.b. Does there
Below is a set of data from a sample of n = 11 items:X (horizontal axis) 7 5 8 3 6 10 12 4 9 15 18 Y (vertical axis) 21 15 24 9 18 30 36 12 27 45 54a. Plot the scatter diagram.b. Is there a relationship between X and Y? Explain.
The table below contains the sales of new passenger cars in New Zealand for February 2016 and 2017. < NZ_CAR_ SALES_16_17 >
The following data for people aged 15 years and older, classified by highest level of educational attainment and gender, were obtained for a certain Australian state:Data obtained from Australian Bureau of Statistics, Education and Work, Australia, May 2016, 62270DO001_201605 accessed March
The following table classifies road fatalities in Australia from 2012 to 2016 (inclusive) by age and gender. < ROAD_ FATALITIES_2012_2016 >Data obtained from the Australian Road Deaths Database accessed 18 March 2017 Ignore the unknown categories.a. Investigate the relationship between age and
The Living in Australia Study gives information on the study mode (full or part time) of students studying for a post-school qualification, as well as their employment status.
Given the following cross-classification table, construct a sideby-side bar chart comparing A and B for each of the threecolumn categories on the vertical axis.
The following data represent the responses to two questions asked in a survey of 40 undergraduate students majoring in business:What is your gender? (M = Male; F = Female; O = Other)What is your major? (A = Accounting; I = Information Systems;M = Marketing)Gender M M M F M F F M F M F M M M M F F M
The ordered arrays in the table below give the life (in hours of usage) of samples of forty 15-watt CFL (compact fluorescent lamp) energy-saving light bulbs produced by two manufacturers, A and B. < BULBS >a. Construct a frequency distribution and percentage distribution for each manufacturer.b.
To investigate the variation in fuel prices in New South Wales on a day in March 2017, a random sample of 45 petrol stations, each in a different location, was selected. The price per litre of both unleaded petrol and diesel is recorded in < FUEL_2017 >.Using the New South Wales data:a. Construct
The following data represent the electricity cost (in dollars)during the month of July for a random sample of 50 two-bedroom apartments in a New Zealand city.a. Construct a frequency distribution and a percentage distribution with upper class boundaries of
The cumulative percentage polygon below shows the amount spent (in dollars) by 200 customers at a local supermarket.a. Approximately what percentage of customers spent less than $100?b. Approximately how many customers spent at least $60?c. Approximately how much did the top 10% of customers
The values for a data set vary from 11.6 to 97.8.a. If these values are grouped into nine classes, indicate appropriate class boundaries.b. What class width did you choose?c. What are the corresponding class mid-points?
Low-fat foods are not necessarily low calorie, as many are high in sugar. The following data give calories per 250 ml cup of a random sample of brands of fresh cow’s milk for sale in Australia. < FRESH_MILK >Full cream milk 155 188 160 155 160 163 170 185 135 160 165 160 163 Low- or reduced-fat
The following data represent ATM fees for withdrawals made above the free monthly allowance for a sample of 26 transaction accounts. < ATM_FEE > 0.65 0.50 0.70 1.30 2.50 0.50 2.00 1.00 2.00 1.25 1.50 2.00 0.30 2.00 0.65 2.00 0.50 0.65 0.50 0.65 1.60 0.70 1.00 1.50 1.65 0.50a. Display the data as an
The following data represent the late payment fee in dollars for a sample of 22 accounts. < LATE_PAYMENT >20 40 40 38 35 35 45 50 45 40 35 45 20 38 45 45 15 35 40 35 45 40a. Display the data as an ordered array.b. Construct a stem-and-leaf display for the data.c. Which of the two displays provides
Form an ordered array given the following stem-and-leaf display from a sample of n = 7 mid-semester exam scores in information systems:
Form a stem-and-leaf display given the following data from a sample of n = 7 mid-semester exam scores in finance:80 54 69 98 93 53 74
Form an ordered array given the following data from a sample of n = 7 mid-semester exam scores in accounting:68 94 63 75 71 88 64
Use the summary table for country of birth in< DEMOGRAPHIC_INFORMATION > to construct pie and bar charts
The following table gives the labour force status of the Australian civilian population aged 15 years and over in January 2017.
Pat, the owner of Pat’s Cars, asked 200 customers their colour preference when purchasing a new car. The following summary table gives the results.
The following table gives the top 10 websites ranked by estimated number of unique monthly visitors in March 2017.Data obtained from eBusMBA Guide, Top 15 Most Popular Websites March 2017, at accessed 13 March 2017a. Construct bar and pie charts.b. Which graphical method do you think best portrays
The pie chart above was constructed from the results of a survey of 2,000 viewers to determine which TV channels they watch for news. By measuring the angle of each one using a protractor, or estimating by eye, calculate the percentage of viewers watching:a. ABCb. Channel 7c. Channel 9
A categorical variable has four categories with the following percentages of occurrence:Category Percentage Category Percentage A 12 C 35 B 29 D 24a. Construct a bar chart.b. Construct a pie chart.
A categorical variable has three categories with the following frequency of occurrence:Category Frequency A 13 B 28 C 9a. Calculate the percentage of values in each category.b. Construct a bar chart.c. Construct a pie chart.
According to a survey conducted by the Australian Interactive Media Industry Association, 77% of mobile phone users surveyed pay by a monthly phone bill compared to 21% who are on pre-paid plans. The percentage of respondents that have data included in their payment plans is 84% (M. M. Mackay,
Researchers at a university wish to conduct a survey of past students to ascertain how frequently they are using statistical techniques in the workforce. The researchers have permission from the ethics committee to use the last recorded email and postal addresses to contact ex-students, but these
are identified on this site as a non-sampling error?b. Discuss which errors would be more difficult to eliminate.
Statistics New Zealand mentions a number of possible sources of non-sampling error in economic surveys in A Guide to Good Survey Design, 3rd edition, which can be downloaded from.a. Which of the four types of survey error from Section
Political polling has traditionally used telephone interviews.Researchers at a polling organisation argue that Internet polling is less expensive and faster, and offers higher response rates than telephone surveys. Critics are concerned about the scientific reliability of this approach. Even amid
A new bus network is proposed for a north-eastern Sydney region.A survey is sent out to residents asking questions which relate to:1. the resident’s age 2. frequency of bus use 3. usual ticket type purchased 4. main purpose of using the busa. Describe the population.b. Indicate whether each of
A manufacturer of flavoured milk is planning to survey households in Tasmania to determine the purchasing habits of consumers.Among the questions to be included are those that relate to:1. where flavoured milk is primarily purchased 2. what flavour of milk is purchased most often 3. how many people
Late in 2016 the National Roads and Motorists’ Association(NRMA), a major Australian motoring organisation, released results of a survey that sought to check members’ attitudes to traffic congestion and a motorway extension (see ).a. Describe the population(s) for this survey.b. Describe the
Detailed information on airport and airline on-time performance can be found at . Explore the departures performance data for different airports and regions.a. Which of the five types of data sources listed in Section 1.3 do you think were used here?b. Name a categorical variable for which
The Australian Bureau of Statistics website allows users to access a large amount of Census data online. Go to and in the Data by Products section click on the latest Census year, enter a location and search for QuickStats.a. Give an example of a categorical variable found in this summary of survey
The Australian Bureau of Statistics site contains survey information on people, business, geography and other topics. Go to the site and find the latest version of Labour Force, Australia (Cat. No. 6202.0).a. Briefly describe the Labour Force survey.b. Give an example of a categorical variable
Make a list of six ways you have used or encountered statistics in the past week. Think about what you read or heard in a news report or saw on a commercial website. Also think whether you made a bet or participated in a survey.
The Australasian Data and Story Library OZDASL is an online library of data files and stories that illustrate the use of basic statistical methods. The stories are classified by method and by topic. Go to this site and click on ‘First Course in Statistics’. Pick a story and summarise how
What is the difference between a stratified sample and a cluster sample?
What is the difference between a simple random sample and a stratified sample?
What is the difference between a simple random sample and a systematic sample?
What is the difference between sampling with replacement and sampling without replacement?
What are some potential problems with using ‘barrel draw’methods to select a simple random sample?
What are the four types of measurement scales?
What is an operational definition and why is it so important?
What is the difference between a discrete and a continuous variable?
What is the difference between a categorical and a numerical variable?
What is the difference between descriptive and inferential statistics?
What is the difference between a statistic and a parameter?
What is the difference between a sample and a population?
The online restaurant search site Dimmi encourages diners to rate restaurants they have been to by giving them reward points which can be accumulated until a meal discount is available. A restaurant at The Rocks in Sydney has been rated as follows: Recommended 8.7; Food 8.5;Service 8.7; Value for
Reality TV shows have incorporated surveys of audience opinion into their formats. In Australia several shows have allowed the audience to vote on whether contestants should remain on the show or be excluded. Consider a show where voting is by SMS, premium rate phone call, Facebook or another
Kiribati is a small, poor Pacific nation under threat from global warming. According to the CIA World Factbook, Kiribati comprises a group of 33 coral atolls in the Pacific Ocean straddling the equator, with elevations varying from 0 to 81 metres above sea level. The low level of some of the
According to a recent cyber security report, ‘millennials remain the most common victims of cybercrime, with 40 percent having experienced cybercrime in the past year’. Reasons given for this include slack online security habits and password sharing (2016 Norton Cyber Security Insights Report,,
A simple random sample of n = 300 full-time employees is selected from a company list containing the names of all N = 5,000 full-time employees in order to evaluate job satisfaction.a. Give an example of possible coverage error.b. Give an example of possible non-response error.c. Give an example of
‘A survey indicates that the vast majority of university students own their own personal computer.’ What information would you want to know before you accepted the results of this survey?
Suppose that 5,000 sales invoices are separated into four strata. Stratum 1 contains 50 electrical invoices, stratum 2 contains 500 paint invoices, stratum 3 contains 1,000 plumbing supplies invoices and stratum 4 contains 3,450 hardware invoices. A sample of 500 sales invoices is needed.a. What
The town planning department of a Sydney council with a population of N = 40,000 registered voters is asked by the mayor to conduct a survey to measure community attitudes to
A population has four members (call them A, B, C and D). You would like to draw a random sample of n = 2, which you decide to do in the following way: flip a coin; if it is heads, the sample will be items A and B; if it is tails, the sample will be items C and D. Although this is a random sample,
You want to select a random sample of n = 1 from a population of three items (called A, B and C ). The rule for selecting the sample is: flip a coin; if it is heads, pick item A; if it is tails, flip the coin again; this time, if it is heads, choose B; if it is tails, choose C. Explain why this is
For a study that consists of personal interviews with participants (rather than mail or phone surveys), explain why a simple random sample might be less practical than some other methods.
Given a population of N = 93, starting in row 29 of the table of random numbers (Table E.1) and reading across the row, select a sample of n = 15:a. without replacementb. with replacement
For a population of N = 902, verify that, by starting in row 05 of the table of random numbers (Table E.1), you need only six rows to select a sample of n = 60 without replacement.
For a population containing N = 902 individuals, what code number would you assign for:a. the first person on the list?b. the fortieth person on the list?c. the last person on the list?
Visit the homepage of the Statistics Portal ‘Statista’ at . Go to Statistics>Popular Statistics, then choose one item to examine. What type of data source is the information presented here based on?
Transportation engineers and planners want to address the dynamic properties of travel behaviour by describing in detail the driving characteristics of drivers over the course of a month.What type of data collection source do you think the transportation engineers and planners should use?
Visit the website of the Pew Research Center at . Read one of today’s top stories. What type of data source is the story based on?
Visit the website of Ipsos Australia at .Read about a recent poll or news story. What type of data source is this based on?
The Data and Story Library (DASL) is an online library of data files and stories that illustrate the use of basic statistical methods. Visit , click Power search, and explore a datafile of interest to you. Which of the five sources of data best describes the sources of the datafile you selected?
Before a company undertakes an online marketing campaign it needs to consider information about its own current sales and the sales made by its competitors. What categorical data might it use?
A university researcher designs an experiment to see how generous participants will be in giving to charity. Discuss the types of variables the experiment might give compared with a survey of the same subjects about donations to charity.
The director of research at the e-business section of a major department store wants to conduct a survey throughout a Australia to determine the amount of time working women spend shopping online for clothing in a typical month.a. Describe the population and the sample of interest, and indicate the
One of the variables most often included in surveys is income.Sometimes the question is phrased, ‘What is your income (in thousands of dollars)?’ In other surveys, the respondent is asked to ‘Place an X in the circle corresponding to your income group’ and given a number of ranges to choose
Suppose the following information is collected from Andrew and Fiona Chen on their application for a home loan mortgage at Metro Home Loans:a. Monthly expenses: $2,056b. Number of dependants being supported by applicant(s): 2c. Annual family salary income: $105,000d. Marital status: Married
For each of the following variables, determine whether the variable is categorical or numerical. If the variable is numerical, determine whether the variable is discrete or continuous. In addition, determine the level of measurement.a. Name of Internet providerb. Amount of time spent surfing the
The following information is collected from students as they leave the campus bookshop during the first week of classes:a. Amount of time spent shopping in the bookshopb. Number of textbooks purchasedc. Name of degreed. Gender Classify each of these variables as categorical or numerical. If the
For each of the following variables, determine whether the variable is categorical or numerical. If the variable is numerical, determine whether the variable is discrete or continuous. In addition, determine the level of measurement.a. Number of mobile phones per householdb. Length (in minutes) of
Suppose that you measure the time it takes to download an MP3 file from the Internet.a. Explain why the download time is a numerical variable.b. Explain why the download time is a ratio scaled variable.
Coffee is sold in three sizes in takeaway cardboard cups –small, medium and large. Explain why the size of the coffee cup is an example of an ordinal scaled variable.
Three different types of drinks are sold at a fast-food restaurant– soft drinks, fruit juices and coffee.a. Explain why the type of drinks sold is an example of a categorical variable.b. Explain why the type of drinks sold is an example of a nominally scaled variable.
Stereograms, revisited Because of the skewness of the distributions of fusion times described in Exercise 43, we might consider a re-expression. Here are the boxplots of the log of fusion times. Is it better to analyze the original fusion times or the log fusion times? Explain.

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Stats Modeling The World 4th Edition David Bock, Paul Velleman, Richard De Veaux - Solutions

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