Question 1

The major applications of data mining have been made by companies with a strong _____ focus.

Accepted Answer

A)  consumer 
B)  manufacturing 
C)  exporting 
D)  research and development 
A)  consumer 
B)  manufacturing 
C)  exporting 
D)  research and development A

Question 2

Facts and figures collected, analyzed, and summarized for presentation and interpretation are called _____.

Accepted Answer

A)  data 
B)  variables 
C)  elements 
D)  variables and elements 
A)  data 
B)  variables 
C)  elements 
D)  variables and elements A

Question 3

The graph below best exemplifies a _____.   (Graph courtesy of Robert Allison.) ​

Accepted Answer

A)  bar graph 
B)  time series graph 
C)  cross-sectional graph 
D)  line graph 
A)  bar graph 
B)  time series graph 
C)  cross-sectional graph 
D)  line graph B

Question 4

The most common type of observational study is a(n) _____.

Accepted Answer

A)  experiment 
B)  survey 
C)  debate 
D)  statistical inference 
A)  experiment 
B)  survey 
C)  debate 
D)  statistical inference

Question 5

The graph below best exemplifies a _____. ​

Accepted Answer

A)  bar graph 
B)  time series graph 
C)  cross-sectional graph 
D)  line graph 
A)  bar graph 
B)  time series graph 
C)  cross-sectional graph 
D)  line graph

Question 6

Income is an example of _____.

Accepted Answer

A)  categorical data 
B)  either categorical or quantitative data 
C)  currency data 
D)  quantitative data 
A)  categorical data 
B)  either categorical or quantitative data 
C)  currency data 
D)  quantitative data

Question 7

Which of the following is NOT an example of an existing source of data?

Accepted Answer

A)  the Internet 
B)  internal company records 
C)  U.S. Census Bureau 
D)  All of these are examples of existing sources of data. 
A)  the Internet 
B)  internal company records 
C)  U.S. Census Bureau 
D)  All of these are examples of existing sources of data.

Question 8

Temperature is an example of which scale of measurement?

Accepted Answer

A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio 
A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio

Question 9

_____ is the process of using procedures from statistics and computer science to extract useful information from extremely large databases.

Accepted Answer

A)  Big data 
B)  Analytics 
C)  Data warehousing 
D)  Data mining 
A)  Big data 
B)  Analytics 
C)  Data warehousing 
D)  Data mining

Question 10

_____ analytics encompasses the set of analytical techniques that describe what has happened in the past.

Accepted Answer

A)  Descriptive 
B)  Predictive 
C)  Prescriptive 
D)  Data 
A)  Descriptive 
B)  Predictive 
C)  Prescriptive 
D)  Data

Question 11

When the data have the properties of interval data and the multiplication or division of two values is meaningful, the variable has which scale of measurement?

Accepted Answer

A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio 
A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio

Question 12

The Department of Transportation of a city has noted that on the average there are 14 accidents per day. The average number of accidents is an example of _____.

Accepted Answer

A)  descriptive statistics 
B)  statistical inference 
C)  a sample 
D)  a population 
A)  descriptive statistics 
B)  statistical inference 
C)  a sample 
D)  a population

Question 13

Which of the following is NOT an example of descriptive statistics?

Accepted Answer

A)  a histogram depicting the age distribution for 30 randomly selected students 
B)  an estimate of the number of Alaska residents who have visited Canada 
C)  a table summarizing the data collected in a sample of new-car buyers 
D)  the proportion of mailed-out questionnaires that were returned 
A)  a histogram depicting the age distribution for 30 randomly selected students 
B)  an estimate of the number of Alaska residents who have visited Canada 
C)  a table summarizing the data collected in a sample of new-car buyers 
D)  the proportion of mailed-out questionnaires that were returned

Question 14

Dr. Kurt Thearling, a leading practitioner in the field, defines data mining as "the _____ extraction of _____ information from databases."

Accepted Answer

A)  thorough, insightful 
B)  timely, accurate 
C)  automated, predictive 
D)  intentional, useful 
A)  thorough, insightful 
B)  timely, accurate 
C)  automated, predictive 
D)  intentional, useful

Question 15

Data collected at the same, or approximately the same, point in time are _____ data.

Accepted Answer

A)  time series 
B)  static 
C)  cross-sectional 
D)  one-dimensional 
A)  time series 
B)  static 
C)  cross-sectional 
D)  one-dimensional

Question 16

A characteristic of interest for the elements is called a(n) _____.

Accepted Answer

A)  sample 
B)  data set 
C)  variable 
D)  observation 
A)  sample 
B)  data set 
C)  variable 
D)  observation

Question 17

A sample of five Fortune 500 companies possessed the following industry codes: banking, banking, finance, retail, and banking. Based on this information, which of the following statements is correct?

Accepted Answer

A)  Sixty percent of the sample of five companies are banking industries. 
B)  Sixty percent of all Fortune 500 companies are banking industries. 
C)  Banking is the most common type of industry among all Fortune 500 companies. 
D)  If five other Fortune 500 companies were chosen, 60% of them would be banking industries. 
A)  Sixty percent of the sample of five companies are banking industries. 
B)  Sixty percent of all Fortune 500 companies are banking industries. 
C)  Banking is the most common type of industry among all Fortune 500 companies. 
D)  If five other Fortune 500 companies were chosen, 60% of them would be banking industries.

Question 18

When the data are labels or names used to identify an attribute of the elements and the rank of the data is meaningful, the variable has which scale of measurement?

Accepted Answer

A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio 
A)  nominal 
B)  ordinal 
C)  interval 
D)  ratio

Question 19

The birth weight of newborns, measured in grams, is an example of _____.

Accepted Answer

A)  categorical data 
B)  either categorical or quantitative data 
C)  neither categorical nor quantitative data 
D)  quantitative data 
A)  categorical data 
B)  either categorical or quantitative data 
C)  neither categorical nor quantitative data 
D)  quantitative data

Question 20

Which of the following is an example of categorical data?

Accepted Answer

A)  social security number 
B)  score on a multiple-choice exam 
C)  height, in meters, of a diving board 
D)  number of square feet of carpet 
A)  social security number 
B)  score on a multiple-choice exam 
C)  height, in meters, of a diving board 
D)  number of square feet of carpet

Exam 1: Data and Statistics

The major applications of data mining have been made by companies with a strong _____ focus.

Facts and figures collected, analyzed, and summarized for presentation and interpretation are called _____.

The graph below best exemplifies a _____. (Graph courtesy of Robert Allison.) ​

The most common type of observational study is a(n) _____.

The graph below best exemplifies a _____. ​

Income is an example of _____.

Which of the following is NOT an example of an existing source of data?

Temperature is an example of which scale of measurement?

_____ is the process of using procedures from statistics and computer science to extract useful information from extremely large databases.

_____ analytics encompasses the set of analytical techniques that describe what has happened in the past.

When the data have the properties of interval data and the multiplication or division of two values is meaningful, the variable has which scale of measurement?

The Department of Transportation of a city has noted that on the average there are 14 accidents per day. The average number of accidents is an example of _____.

Which of the following is NOT an example of descriptive statistics?

Dr. Kurt Thearling, a leading practitioner in the field, defines data mining as "the _____ extraction of _____ information from databases."

Data collected at the same, or approximately the same, point in time are _____ data.

A characteristic of interest for the elements is called a(n) _____.

A sample of five Fortune 500 companies possessed the following industry codes: banking, banking, finance, retail, and banking. Based on this information, which of the following statements is correct?

When the data are labels or names used to identify an attribute of the elements and the rank of the data is meaningful, the variable has which scale of measurement?

The birth weight of newborns, measured in grams, is an example of _____.

Which of the following is an example of categorical data?

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Tests of Goodness of Fit, Independence, and Multiple Proportions

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Decision Analysis

Sample Survey

Filters

The graph below best exemplifies a _____. (Graph courtesy of Robert Allison.)

The graph below best exemplifies a _____.

Dr. Kurt Thearling, a leading practitioner in the field, defines data mining as "the _ extraction of _ information from databases."