Deck 1: What Is Statistics

Question 1

A sample is a portion or part of the population of interest.

Answer 1

True

Question 2

A store asks shoppers for their zip code to identify market areas.Zip codes are an example of ratio data.

Answer 2

False

Question 3

There are four levels of measurement-qualitative,quantitative,discrete,and continuous.

Answer 3

False

Question 4

To infer something about a population,we usually take a sample from the population.

Question 5

Descriptive statistics are used to find out something about a population based on a sample.

Question 6

The CIA World Factbook cited these numbers for the United States:
$\bullet$ Birthrate is 14.14 births per 1,000 population
$\bullet$ Average life expectancy for females is 80 years
$\bullet$ Approximately 290 million persons residing in the United States
Each of these numbers is referred to as statistic.

Question 7

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.

Question 8

Statistics are used to report the summary results of market surveys.

Question 9

Statistics are used as a basis for making decisions.

Question 10

An ordinal level of measurement implies some sort of ranking.

Question 11

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

Question 12

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.

Question 13

A population is a collection of all individuals,objects,or measurements of interest.

Question 14

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.

Question 15

If we select 100 persons from 25,000 registered voters and question them about candidates and issues,the 100 persons are referred to as the population.

Question 16

The ordinal level of measurement is considered the "lowest" level of measurement.

Question 17

Categorizing voters as Democrats,Republicans and Independents is an example of interval level measurement.

Question 18

Data measured on a nominal scale can only be classified into categories.

Question 19

The terms descriptive statistics and inferential statistics can be used interchangeably.

Question 20

The typical number of passengers on commercial flights between Chicago and New York city is an example of a statistic.

Question 21

The main purpose of descriptive statistics is to:

A)Summarize data in a useful and informative manner.
B)Make inferences about a population.
C)Determine if the data adequately represents the population.
D)Gather or collect data.

Question 22

Which word is NOT part of the definition of descriptive statistics?

A)Organizing
B)Analyzing
C)Presenting
D)Predicting

Question 23

The reported unemployment is 5.5% of the population.What type of scale is used to measure unemployment?

A)Nominal
B)Ordinal
C)Interval or ratio
D)Descriptive

Question 24

The branch of mathematics used to facilitate the collection,organization,presentation,analysis and interpretation of numerical data is referred to as a statistics.

Question 25

The order that runners finish in a race would be an example of continuous data.

Question 26

The Equal Employment Opportunity Act requires employers to classify their employees by gender and national origin.Which level of measurement is this?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 27

The incomes of a group of 50 loan applicants are obtained.Which level of measurement is income?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 28

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

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 29

The members of each basketball team wear numbers on their jerseys.What scale of measurement are these numbers considered?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 30

If Gallup,Harris and other pollsters asked people to indicate their political party affiliation as Democrat,Republican or Independent,the data gathered would be an example of which scale of measurement?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 31

What level of measurement are the Centigrade and Fahrenheit temperature scales?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 32

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

Question 33

A survey includes a question regarding marital status that has the following responses: single,married,divorced,separated or widowed.What is the scale of measurement for this question?

A)Ratio
B)Interval
C)Ordinal
D)Nominal

Question 34

Respondents were asked,"Do you now earn more than or less than you did five years ago?" What is this level of measurement?

A)Interval
B)Ratio
C)Nominal
D)Ordinal

Question 35

The number of children in a family is a discrete variable.

Question 36

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

A)Family income
B)Number of students in a statistics class
C)Zip codes of shoppers
D)Rankings of baseball teams in a league

Question 37

What is a portion or part of a population called?

A)Random survey
B)Sample
C)Tally
D)Frequency distribution

Question 38

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

A)The sample was only 5 dentists.
B)The sample of dentists is clearly explained.
C)The advertisement does not include the total number of dentists surveyed.
D)The conclusion is not illustrated with a graph.

Question 39

A marketing class of 50 students evaluated the instructor using the following scale: superior,good,average,poor,and inferior.The descriptive summary showed the following survey results: 2% superior,8% good,45% average,45% poor,and 0% inferior.

A)The instructor's performance was great!!!
B)The instructor's performance was inferior.
C)Most students rated the instructor as poor or average.
D)No conclusions can be made.

Question 40

The principal difference between the interval and ratio scale is that the ratio scale has a meaningful zero point.

Question 41

Shoe sizes,such as 7B,10D and 12EEE,are examples of what level of measurement?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 42

What type of variable is the number of gallons of gasoline pumped by a filling station during a day?

A)Qualitative
B)Continuous
C)Attribute
D)Discrete

Question 43

What type of variable is the number of robberies reported in your city?

A)Attribute
B)Continuous
C)Discrete
D)Qualitative

Question 44

The performance of personal and business investments is measured as a percentage,"return on investment".What type of variable is "return on investment"?

A)Qualitative
B)Continuous
C)Attribute
D)Discrete

Question 45

What level of measurement is a bar code?

A)Ratio
B)Ordinal
C)Interval
D)Nominal

Question 46

Which of the following is an example of attribute data?

A)Number of children in a family
B)Weight of a person
C)Color of ink in a pen
D)Miles between oil changes

Question 47

A scale used to measure a quantitative variable is either _______________ or _______________.

Question 48

The final rankings of the top 20 NCAA college basketball teams are an example of which level of measurement?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 49

The general process of gathering,organizing,summarizing,analyzing,and interpreting data is called

A)Statistics.
B)Descriptive statistics.
C)Inferential statistics.
D)Levels of measurement.

Question 50

What level of measurement is the number of auto accidents reported in a given month?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 51

The names of the positions in a corporation,such as chief operating officer or controller,are examples of what level of measurement?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 52

The Nielsen Ratings break down the number of people watching a particular television show by age.Age is what level of measurement?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 53

A group of women tried five brands of finger nail polish and ranked them according to preference.What level of measurement is this?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 54

The monthly Consumer Price Index is called a(n)_______________.

Question 55

What level of measurement is the prime rate of interest? ______________

Question 56

Which one of the following is NOT an example of discrete data?

A)Number of households watching the Home Shopping Network.
B)Number of employees reporting in sick.
C)Number of miles between New York City and Chicago.
D)Number of members of the Denver Lions Club.

Question 57

Your height and weight are examples of which level of measurement?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 58

A qualitative variable such as eye color is also referred to as a(n)_____________ variable.

Question 59

What level of measurement is the price of an admission ticket to a movie theater?

A)Nominal
B)Ordinal
C)Interval
D)Ratio

Question 60

Ranked data is an example of what level of measurement? ________________

Question 61

The major advantage of ordinal data over nominal data is that it allows for __________________.

Question 62

The number of workers reporting sick in any particular week is considered to be _______________ data.

Question 63

The principal difference between the interval and ratio scale of measurement is that the ratio scale has a ___________________.

Question 64

The "lowest" level of measurement is ____________.

Question 65

The branch of statistics that collects,analyzes and presents data is called _____________ statistics.

Question 66

A company was studying the demographics of their customers.As part of the study they collected the following variables: gender,marital status,credit rating (low,medium,high),annual income,and age.Label each variable as qualitative or quantitative,discrete or continuous,and nominal,ordinal,interval,or ratio.

Question 67

A variable that can have any value within a specific range is called ________________.

Question 68

If we test a small number of light bulbs from a large group,the small group is called a _____________.

Question 69

Categorizing students as freshmen,sophomores,juniors and seniors is an example of the ______________ level of measurement.

Question 70

Among the many classes held at your college or university,your statistics class has been selected for a study.This one class is referred to as a _____________.

Question 71

When we make an estimate or prediction,we use ________________

Question 72

A New York newspaper reported the average gasoline prices in four metropolitan areas and used a bar chart to illustrate the differences.What type of statistics was shown? What activities did the newspaper use to make the report?

Question 73

The lowest level of measurement that has some sort of ranking is ___________.

Question 74

The branch of statistics that uses sample information to make conclusions about a population is called _________________ statistics.

Question 75

Describe the difference between a population and a sample.

Question 76

The branch of statistics that does not involve generalizations is called _______________

Question 77

The collection of all possible objects of interest is referred to as the _____________.

Question 78

The science of collecting,organizing,presenting,analyzing,and interpreting of data is called ___________________.

Question 79

The "highest" level of measurement is _______________.