Exam 1: What Is Statistics

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)

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Question 21

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?

(Multiple Choice)

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Question 22

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

(True/False)

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Question 23

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

(True/False)

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Question 24

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

(Multiple Choice)

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Question 25

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

(Multiple Choice)

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Question 26

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

(True/False)

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Question 27

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

(Multiple Choice)

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Question 28

What is a portion or part of a population called?

(Multiple Choice)

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Question 29

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.

(Essay)

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Question 30

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

(True/False)

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Question 31

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.

(True/False)

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Question 32

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

(True/False)

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Question 33

Which of the following is an example of attribute data?

(Multiple Choice)

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Question 34

Describe the difference between a population and a sample.

(Essay)

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Question 35

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

(Short Answer)

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Question 36

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

(Multiple Choice)

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Question 37

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

(Multiple Choice)

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Question 38

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

(Short Answer)

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Question 39

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

(Short Answer)

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Question 40

Showing 21 - 40 of 79

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.

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?

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

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

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

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

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

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

What is a portion or part of a population called?

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

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.

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

Which of the following is an example of attribute data?

Describe the difference between a population and a sample.

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

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

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

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

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

Describing Data: Frequency Distributions and Graphic Presentations

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Linear Regression and Correlation

Multiple Regression and Correlation Analysis

Chi-Square Applications

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