Question 1

A variable is some characteristic of a population or sample.

Accepted Answer

A) True 
 B)False

Question 2

NARRBEGIN: Internet Classes
Internet Classes
A survey of 25 students was conducted to determine how they rate the quality of Internet classes. Students were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below. $$\begin{array} { c | l } 
\text { Stem } & \text { Leaves } \
\hline 3 & 15 \
4 & 01457889 \
5 & 0134677 \
6 & 24568 \
7 & 29 \
8 & \
9 & 5
\end{array}$$ NARREND
-A cross-classification table is used to describe the relationship between two ____________________ variables.

Accepted Answer

nominal
ca

Question 3

Which of the following situations is best suited for a pie chart?

Accepted Answer

A) The number of dollars spent this year on each type of legal gambling. 
B) The percentage of a charitable donation that goes to administrative costs vs. directly to the charity. 
C) The number of students in your class who received an A, B, C, D, F on their exam. 
D) All of these choices are true. 
A) The number of dollars spent this year on each type of legal gambling. 
B) The percentage of a charitable donation that goes to administrative costs vs. directly to the charity. 
C) The number of students in your class who received an A, B, C, D, F on their exam. 
D) All of these choices are true.

Question 4

The values of quantitative data are categories.

Accepted Answer

A) True 
 B)False

Question 5

The classification of student major (accounting, economics, management, marketing, other) is an example of a(n)

Accepted Answer

A) nominal random variable. 
B) interval random variable. 
C) continuous random variable. 
D) parameter. 
A) nominal random variable. 
B) interval random variable. 
C) continuous random variable. 
D) parameter.

Question 6

NARRBEGIN: Internet Classes
Internet Classes
A survey of 25 students was conducted to determine how they rate the quality of Internet classes. Students were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below. $$\begin{array} { c | l } 
\text { Stem } & \text { Leaves } \
\hline 3 & 15 \
4 & 01457889 \
5 & 0134677 \
6 & 24568 \
7 & 29 \
8 & \
9 & 5
\end{array}$$ NARREND
-The percentage of observations in each combination of the cross-classification table must be equal in order to show two nominal variables are not related.

Accepted Answer

A) True 
 B)False

Question 7

NARRBEGIN: Internet Classes
Internet Classes
A survey of 25 students was conducted to determine how they rate the quality of Internet classes. Students were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below. $$\begin{array} { c | l } 
\text { Stem } & \text { Leaves } \
\hline 3 & 15 \
4 & 01457889 \
5 & 0134677 \
6 & 24568 \
7 & 29 \
8 & \
9 & 5
\end{array}$$ NARREND
-The bar charts below summarize data collected on 100 adults regarding gender and pet ownership. Which of the following statements is (are) true based on this chart?

Accepted Answer

A) Gender and pet ownership are related; a higher percentage of males own pets than females. 
B) Gender and pet ownership are related; a higher percentage of females own pets than males. 
C) Gender and pet ownership are related; males and females own the same percentage of pets. 
D) Gender and pet ownership are not related. 
A) Gender and pet ownership are related; a higher percentage of males own pets than females. 
B) Gender and pet ownership are related; a higher percentage of females own pets than males. 
C) Gender and pet ownership are related; males and females own the same percentage of pets. 
D) Gender and pet ownership are not related.

Question 8

A relative frequency distribution lists the categories and their counts.

Accepted Answer

A) True 
 B)False

Question 9

Nominal data are also called qualitative or categorical data.

Accepted Answer

A) True 
 B)False

Question 10

NARRBEGIN: Internet Classes
Internet Classes
A survey of 25 students was conducted to determine how they rate the quality of Internet classes. Students were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below. $$\begin{array} { c | l } 
\text { Stem } & \text { Leaves } \
\hline 3 & 15 \
4 & 01457889 \
5 & 0134677 \
6 & 24568 \
7 & 29 \
8 & \
9 & 5
\end{array}$$ NARREND
-Two hundred males and two hundred females were asked whether or not college baseball should have a playoff system (yes/no/undecided). Pie charts of the responses for males vs. females are shown below. Which of the following describes the relationship between gender and opinion?

Accepted Answer

A) A higher percentage of males want a playoff system compared to females. 
B) More males than females are undecided on this issue. 
C) Gender and opinion on a playoff system are related. 
D) All of these choices are true. 
A) A higher percentage of males want a playoff system compared to females. 
B) More males than females are undecided on this issue. 
C) Gender and opinion on a playoff system are related. 
D) All of these choices are true.

Question 11

NARRBEGIN: Internet Classes
Internet Classes
A survey of 25 students was conducted to determine how they rate the quality of Internet classes. Students were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below. $$\begin{array} { c | l } 
\text { Stem } & \text { Leaves } \
\hline 3 & 15 \
4 & 01457889 \
5 & 0134677 \
6 & 24568 \
7 & 29 \
8 & \
9 & 5
\end{array}$$ NARREND
-In the following cross-classification table, gender and car ownership are related. $$\begin{array} { | l | c | c | } 
\hline & \text { Own a car } & \text { Dan't Own a car } \
\hline \text { Females } & 60& 30 \
\text { Males } & \mathbf { 8 0 } & 40 \
\hline
\end{array}$$

Accepted Answer

A) True 
 B)False

Question 12

Your final grade in a course (A, B, C, D, E) is a nominal variable.

Accepted Answer

A) True 
 B)False

Question 13

A pie chart is used to represent ____________________ data.

Accepted Answer

nominal
ca

Question 14

Which of the following statements about pie charts is false?

Accepted Answer

A) A pie chart is a graphical representation of a relative frequency distribution. 
B) You can always determine frequencies for each category by looking at a pie chart. 
C) The total percentage of all the slices of a pie chart is 100%. 
D) The area of a slice of a pie chart is the proportion of all the individuals that fall into that particular category. 
A) A pie chart is a graphical representation of a relative frequency distribution. 
B) You can always determine frequencies for each category by looking at a pie chart. 
C) The total percentage of all the slices of a pie chart is 100%. 
D) The area of a slice of a pie chart is the proportion of all the individuals that fall into that particular category.

Question 15

NARRBEGIN: Internet Classes
Internet Classes
A survey of 25 students was conducted to determine how they rate the quality of Internet classes. Students were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below. $$\begin{array} { c | l } 
\text { Stem } & \text { Leaves } \
\hline 3 & 15 \
4 & 01457889 \
5 & 0134677 \
6 & 24568 \
7 & 29 \
8 & \
9 & 5
\end{array}$$ NARREND
-If two bar charts made from the rows of a cross-classification table look the same, then the two nominal variables ____________________ (are/are not) related.

Accepted Answer

The answer of NARRBEGIN: Internet Classes
Internet Classes
A survey of 25...

Question 16

A bar chart is used to represent ____________________ data.

Accepted Answer

nominal
ca

Question 17

With nominal data, there is one and only one way the possible values can be ordered.

Accepted Answer

A) True 
 B)False

Question 18

Values must represent ordered rankings for what type of data?

Accepted Answer

A) Interval data 
B) Nominal data 
C) Ordinal data 
D) None of these choices. 
A) Interval data 
B) Nominal data 
C) Ordinal data 
D) None of these choices.

Question 19

NARRBEGIN: Internet Classes
Internet Classes
A survey of 25 students was conducted to determine how they rate the quality of Internet classes. Students were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below. $$\begin{array} { c | l } 
\text { Stem } & \text { Leaves } \
\hline 3 & 15 \
4 & 01457889 \
5 & 0134677 \
6 & 24568 \
7 & 29 \
8 & \
9 & 5
\end{array}$$ NARREND
-In the following cross-classification table, gender and fantasy baseball participation are related. $$\begin{array} { | l | c | c | } 
\hline & \begin{array} { c } 
\text { Participate in Fantasy } \
\text { Fantball }
\end{array} & \begin{array} { c } 
\text { Dan't participate in } \
\text { Fantasy Faotball }
\end{array} \
\hline \text { Males } & 75 & 25 \
\text { Females } & 45 & 55 \
\hline
\end{array}$$

Accepted Answer

A) True 
 B)False

Question 20

NARRBEGIN: All-Nighters
All-Nighters
A sample of 400 students at a certain university was taken after the midterm; 200 students reported staying up all night before the midterm and the other 200 students did not. Researchers recorded whether each student did well or poorly on the midterm. The following table contains the results. $$\begin{array} { | l | c | c | } 
\hline & \begin{array} { c } 
\text { Did Well on } \
\text { Midterm }
\end{array} & \begin{array} { c } 
\text { Did Poorly on } \
\text { Midterm }
\end{array} \
\hline \text { Stayed up all right } & 60 & 140 \
\text { Did not stay up all night } & 120 & 80 \
\hline
\end{array}$$ NARREND
-{All-Nighters Narrative} Of those who did well on the midterm, what percentage stayed up all night before the midterm?

Accepted Answer

The answer of NARRBEGIN: All-Nighters
All-Nighters
A sample of 400 students at...

A variable is some characteristic of a population or sample.

Which of the following situations is best suited for a pie chart?

The values of quantitative data are categories.

The classification of student major (accounting, economics, management, marketing, other) is an example of a(n)

A relative frequency distribution lists the categories and their counts.

Nominal data are also called qualitative or categorical data.

Your final grade in a course (A, B, C, D, E) is a nominal variable.

A pie chart is used to represent ____________________ data.

Which of the following statements about pie charts is false?

A bar chart is used to represent ____________________ data.

With nominal data, there is one and only one way the possible values can be ordered.

Values must represent ordered rankings for what type of data?

What Is Statistics

Graphical Descriptive Techniques II

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests Optional

Simple Linear Regression and Correlation

Multiple Regression

Filters

Exam 2: Graphical Descriptive Techniques I

A variable is some characteristic of a population or sample.

Which of the following situations is best suited for a pie chart?

The values of quantitative data are categories.

The classification of student major (accounting, economics, management, marketing, other) is an example of a(n)

A relative frequency distribution lists the categories and their counts.

Nominal data are also called qualitative or categorical data.

Your final grade in a course (A, B, C, D, E) is a nominal variable.

A pie chart is used to represent ____________________ data.

Which of the following statements about pie charts is false?

A bar chart is used to represent ____________________ data.

With nominal data, there is one and only one way the possible values can be ordered.

Values must represent ordered rankings for what type of data?

What Is Statistics

Graphical Descriptive Techniques II

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests Optional

Simple Linear Regression and Correlation

Multiple Regression

Filters