3 A listing of 100 family annual incomes is an example of statistics.

Version 1 1 Chapter 1

TRUE/FALSE - Write 'T' if the statement is true and 'F' if the statement is false.1) A population is a collection of all individuals, objects, or measurements of interest.⊚ true ⊚ false

2) Statistics are used as a basis for making decisions.⊚ true ⊚ false

3) A listing of 100 family annual incomes is an example of statistics.⊚ true ⊚ false

4) The average number of passengers on commercial flights between Chicago and New York City is an example of a statistic.⊚ true ⊚ false

5) Statistics is used to report the summary results of market surveys.⊚ true ⊚ false

6) A sample is a portion or part of the population of interest.⊚ true ⊚ false

7) To infer something about a population, we usually take a sample from the population.⊚ true ⊚ false

8) Descriptive statistics are used to find out something about a population based on a sample.⊚ true ⊚ false

9) There are four levels of measurement: qualitative, quantitative, discrete, and continuous.⊚ true ⊚ false

(Statistical Techniques in Business and Economics, 19e Douglas Lind, William Marchal, Samuel Wathe) (Test Bank, Answer at the end of each Chapter) 1 / 4

Version 1 2 10) The ordinal level of measurement is considered the "lowest" level of measurement.⊚ true ⊚ false

11) A store asks shoppers for their zip codes to identify market areas. Zip codes are an example of ratio data.⊚ true ⊚ false

12) An ordinal level of measurement implies some sort of ranking.⊚ true ⊚ false

13) Data measured on a nominal scale can only be classified into categories.⊚ true ⊚ false

14) The terms descriptive statistics and inferential statistics can be used interchangeably.⊚ true ⊚ false

15) A marketing research agency was hired to test a new DVD player. Consumers rated it outstanding, very good, fair, or poor. The level of measurement for this experiment is ordinal.⊚ true ⊚ false

16) The Union of Electrical Workers of America with 9,128 members polled 362 members about a new wage package that will be submitted to management. The population is the 362 members.⊚ true ⊚ false

17) The CIA World Factbook cited these numbers for the United States:

The birthrate is 13.66 births per 1,000 of the population.The average life expectancy for females is 81.17 years.Approximately 316.7 million people reside in the United States.Each of these numbers is referred to as a statistic.⊚ true ⊚ false

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Version 1 3 18) If we select 100 people from 25,000 registered voters and question them about candidates and issues, the 100 people are referred to as the population.⊚ true ⊚ false

19) Statistics is defined as a body of techniques used to facilitate the collection, organization, presentation, analysis, and interpretation of information for the purpose of making better decisions.⊚ true ⊚ false

20) Categorizing voters as Democrats, Republicans, and Independents is an example of interval level measurement.⊚ true ⊚ false

21) The order in which runners finish in a race would be an example of continuous data.⊚ true ⊚ false

22) Based on a sample of 3,000 people, the civilian unemployment rate in the United States was 5.5%. The 5.5% is referred to as a statistic.⊚ true ⊚ false

23) The principal difference between the interval and ratio scale is that the ratio scale has a meaningful zero point.⊚ true ⊚ false

24) The branch of mathematics used to facilitate the collection, organization, presentation, analysis, and interpretation of numerical information is referred to as statistics.⊚ true ⊚ false

25) The number of children in a family is a discrete variable.⊚ true ⊚ false

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Version 1 4 MULTIPLE CHOICE - Choose the one alternative that best completes the statement or answers the question.26) The main purpose of descriptive statistics is to

• summarize data in a useful and informative manner.
• make inferences about a population.
• determine if the data adequately represent the population.
• gather or collect data.

27) Which of the following is an example of a continuous variable?

• Tons of concrete to complete a parking garage
• Number of students in a statistics class
• Zip codes of shoppers
• Rankings of baseball teams in a league

28) The incomes of 50 loan applicants are obtained. Which level of measurement is income?

• Nominal
• Ordinal
• Interval
• Ratio

29) When TV advertisements report that "2 out of 3 dentists surveyed indicated they would recommend Brand X toothpaste to their patients," an informed consumer may question the conclusion because

• the sample was only 5 dentists.
• the sample of dentists is clearly explained.
• the advertisement does not include the total number of dentists surveyed.
• the conclusion is not illustrated with a graph.

30) A bank asks customers to evaluate its drive-through service as good, average, or poor. Which level of measurement is this classification?

• Nominal
• Ordinal
• Interval
• Ratio

31) A portion or part of a population is called a

• random survey.
• sample.
• tally.
• frequency distribution.
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