Question 1

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

Accepted Answer

A)  ​wholesale 
B)  ​manufacturing 
C)  consumer 
D)  ​research and development 
A)  ​wholesale 
B)  ​manufacturing 
C)  consumer 
D)  ​research and development

Question 2

Since a sample is a subset of the population, the sample mean _____ the mean of the population.

Accepted Answer

A)  is always smaller than 
B)  is always larger than 
C)  must be equal to 
D)  varies around 
A)  is always smaller than 
B)  is always larger than 
C)  must be equal to 
D)  varies around

Question 3

The set of analytical techniques that yield a best course of action is _____ analytics.

Accepted Answer

A)  prescriptive 
B)  predictive 
C)  descriptive 
D)  diagnostic 
A)  prescriptive 
B)  predictive 
C)  descriptive 
D)  diagnostic

Question 4

The owner of a factory regularly requests a graphical summary of all employees' salaries.The graphical summary of salaries is an example of _____ statistics.

Accepted Answer

A)  inferential 
B)  descriptive 
C)  experimental 
D)  observational 
A)  inferential 
B)  descriptive 
C)  experimental 
D)  observational

Question 5

How many scales of measurement exist?

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  8 
A)  2 
B)  4 
C)  6 
D)  8

Question 6

The measurement scale suitable for quantitative data is _____ scale.

Accepted Answer

A)  the ordinal 
B)  the nominal 
C)  either the interval or ratio 
D)  only the interval 
A)  the ordinal 
B)  the nominal 
C)  either the interval or ratio 
D)  only the interval

Question 7

The height of a building, measured in feet, is an example of _____ data.

Accepted Answer

A)  categorical 
B)  either categorical or quantitative 
C)  neither categorical or quantitative 
D)  quantitative 
A)  categorical 
B)  either categorical or quantitative 
C)  neither categorical or quantitative 
D)  quantitative

Question 8

The average age in a sample of 190 students at City College is 22.As a result of this sample, it can be concluded that the average age of all the students at City College

Accepted Answer

A)  must be more than 22, since the population is always larger than the sample. 
B)  must be less than 22, since the sample is only a part of the population. 
C)  could not be 22. 
D)  is around 22. 
A)  must be more than 22, since the population is always larger than the sample. 
B)  must be less than 22, since the sample is only a part of the population. 
C)  could not be 22. 
D)  is around 22.

Question 9

Which of the following variables uses the interval scale of measurement?​

Accepted Answer

A)  ​Standardized test score 
B)  ​Time duration 
C)  ​Student ID number 
D)  ​Vehicle miles-per-gallon 
A)  ​Standardized test score 
B)  ​Time duration 
C)  ​Student ID number 
D)  ​Vehicle miles-per-gallon

Question 10

Data measured a nominal scale

Accepted Answer

A)  must be alphabetic. 
B)  can be either numeric or nonnumeric. 
C)  must be numeric. 
D)  must rank order the data. 
A)  must be alphabetic. 
B)  can be either numeric or nonnumeric. 
C)  must be numeric. 
D)  must rank order the data.

Question 11

The summaries of data, which may be tabular, graphical, or numerical, are referred to as _____ statistics.

Accepted Answer

A)  inferential 
B)  descriptive 
C)  observational 
D)  experimental 
A)  inferential 
B)  descriptive 
C)  observational 
D)  experimental

Question 12

Analytics is generally thought to comprise three broad categories of techniques that include all of the following except _____ analytics.

Accepted Answer

A)  prescriptive 
B)  predictive 
C)  descriptive 
D)  diagnostic 
A)  prescriptive 
B)  predictive 
C)  descriptive 
D)  diagnostic

Question 13

Cost of a theater ticket is an example of

Accepted Answer

A)  categorical data. 
B)  either categorical or quantitative data. 
C)  nominal data. 
D)  quantitative data. 
A)  categorical data. 
B)  either categorical or quantitative data. 
C)  nominal data. 
D)  quantitative data.

Question 14

A statistics professor asked students in a class their ages.Based on this information, the professor states that the average age of all the students in the university is 24 years.This is an example of

Accepted Answer

A)  an observational study. 
B)  descriptive statistics. 
C)  an experiment. 
D)  statistical inference. 
A)  an observational study. 
B)  descriptive statistics. 
C)  an experiment. 
D)  statistical inference.

Question 15

Goals scored in a soccer game is an example of

Accepted Answer

A)  a categorical variable. 
B)  a quantitative variable. 
C)  either a quantitative or categorical variable. 
D)  neither a quantitative nor categorical variable. 
A)  a categorical variable. 
B)  a quantitative variable. 
C)  either a quantitative or categorical variable. 
D)  neither a quantitative nor categorical variable.

Question 16

Which of the following is not an example of a firm that sells or leases business database services to clients?

Accepted Answer

A)  ​Dun & Bradstreet 
B)  ​Bloomberg 
C)  ​Census Bureau 
D)  ​Dow Jones & Co. 
A)  ​Dun & Bradstreet 
B)  ​Bloomberg 
C)  ​Census Bureau 
D)  ​Dow Jones & Co.

Question 17

In a random sample of 200 items, 5 items were defective.An estimate of the percentage of defective items in the population is

Accepted Answer

A)  5%. 
B)  2.5%. 
C)  20%. 
D)  10%. 
A)  5%. 
B)  2.5%. 
C)  20%. 
D)  10%.

Question 18

Different methods of developing useful information from large data bases are dealt with under

Accepted Answer

A)  data manipulation. 
B)  data warehousing. 
C)  big data. 
D)  data mining. 
A)  data manipulation. 
B)  data warehousing. 
C)  big data. 
D)  data mining.

Question 19

An interviewer has made an error in recording the data.This type of error is known as a(n) _____ error.

Accepted Answer

A)  experimental 
B)  data acquisition 
C)  non-experimental 
D)  conglomerate 
A)  experimental 
B)  data acquisition 
C)  non-experimental 
D)  conglomerate

Question 20

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.

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

Since a sample is a subset of the population, the sample mean _____ the mean of the population.

The set of analytical techniques that yield a best course of action is _____ analytics.

The owner of a factory regularly requests a graphical summary of all employees' salaries.The graphical summary of salaries is an example of _____ statistics.

How many scales of measurement exist?

The measurement scale suitable for quantitative data is _____ scale.

The height of a building, measured in feet, is an example of _____ data.

The average age in a sample of 190 students at City College is 22.As a result of this sample, it can be concluded that the average age of all the students at City College

Which of the following variables uses the interval scale of measurement?

Data measured a nominal scale

The summaries of data, which may be tabular, graphical, or numerical, are referred to as _____ statistics.

Analytics is generally thought to comprise three broad categories of techniques that include all of the following except _____ analytics.

Cost of a theater ticket is an example of

A statistics professor asked students in a class their ages.Based on this information, the professor states that the average age of all the students in the university is 24 years.This is an example of

Goals scored in a soccer game is an example of

Which of the following is not an example of a firm that sells or leases business database services to clients?

In a random sample of 200 items, 5 items were defective.An estimate of the percentage of defective items in the population is

Different methods of developing useful information from large data bases are dealt with under

An interviewer has made an error in recording the data.This type of error is known as a(n) _____ error.

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

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

Comparing Multiple Proportions, Tests of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

Exam 1: Data and Statistics

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

Since a sample is a subset of the population, the sample mean _____ the mean of the population.

The set of analytical techniques that yield a best course of action is _____ analytics.

The owner of a factory regularly requests a graphical summary of all employees' salaries.The graphical summary of salaries is an example of _____ statistics.

How many scales of measurement exist?

The measurement scale suitable for quantitative data is _____ scale.

The height of a building, measured in feet, is an example of _____ data.

The average age in a sample of 190 students at City College is 22.As a result of this sample, it can be concluded that the average age of all the students at City College

Which of the following variables uses the interval scale of measurement?​

Data measured a nominal scale

The summaries of data, which may be tabular, graphical, or numerical, are referred to as _____ statistics.

Analytics is generally thought to comprise three broad categories of techniques that include all of the following except _____ analytics.

Cost of a theater ticket is an example of

A statistics professor asked students in a class their ages.Based on this information, the professor states that the average age of all the students in the university is 24 years.This is an example of

Goals scored in a soccer game is an example of

Which of the following is not an example of a firm that sells or leases business database services to clients?

In a random sample of 200 items, 5 items were defective.An estimate of the percentage of defective items in the population is

Different methods of developing useful information from large data bases are dealt with under

An interviewer has made an error in recording the data.This type of error is known as a(n) _____ error.

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

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

Comparing Multiple Proportions, Tests of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

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

Which of the following variables uses the interval scale of measurement?