Question 1

The classification of student class designation (freshman, sophomore, junior, senior) is an example of a(n)

Accepted Answer

A) nominal random variable. 
B) interval random variable. 
C) ordinal random variable. 
D) a parameter. 
A) nominal random variable. 
B) interval random variable. 
C) ordinal random variable. 
D) a parameter. C

Question 2

Your age group (1-9; 10-19; 20-29; 30-39; etc.) is an interval variable.

Accepted Answer

A) True 
 B)False  False

Question 3

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
-To describe the relationship between two nominal variables you make a scatter diagram and look for a correlation.

Accepted Answer

A) True 
 B)False  False

Question 4

Interval data may be treated as ordinal or nominal.

Accepted Answer

A) True 
 B)False

Question 5

Two types of graphs that organize nominal data are ____________________ and ____________________.

Accepted Answer

pie charts

Question 6

All calculations are permitted on what type of data?

Accepted Answer

A) Interval data 
B) Nominal data 
C) Ordinal data 
D) All of these choices are true. 
A) Interval data 
B) Nominal data 
C) Ordinal data 
D) All of these choices are true.

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
-A cross-classification table is the same thing as two frequency distribution tables, one for each variable.

Accepted Answer

A) True 
 B)False

Question 8

Using the following cross-classification table, draw two pie charts that compare pet ownership for males vs. females. Are gender and pet ownership related?
 $$\begin{array} { | l | c | c | } 
\hline & \text { Own a pet } & \text { Dan't own a pet } \
\hline \text { Females } & 75 & 25 \
\text { Males } & 40 & 60 \
\hline
\end{array}$$

Accepted Answer

The pie charts below show gend

Question 9

Interval data, such as heights, weights, and incomes, are also referred to as quantitative or numerical 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
-In the following cross-classification table, how are gender and house ownership related? $$\begin{array} { | l | c | c | } 
\hline & \text { Own a house } & \text { Dan't own a house } \
\hline \text { Females } & 60 & 30 \
\text { Males } &80 & 4 0 \
\hline
\end{array}$$

Accepted Answer

A) The percentage of house owners is higher for males than for females. 
B) The percentage of house owners is higher for females than for males. 
C) The percentage of house owners is the same for females and males. 
D) You cannot compare percentages for males and females since the total frequencies are not equal. 
A) The percentage of house owners is higher for males than for females. 
B) The percentage of house owners is higher for females than for males. 
C) The percentage of house owners is the same for females and males. 
D) You cannot compare percentages for males and females since the total frequencies are not equal.

Question 11

For which type of data are the values arbitrary numbers?

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 12

NARRBEGIN: Business Graduates
Business School Graduates
A sample of business school graduates were asked what their major was. The results are shown in the following frequency distribution. $$\begin{array} { | l | l |} 
\hline \text { Major of Graduates } & \text { Number of graduates } \
\hline \text { Accounting } & 58 \
\text { Finance } & 42 \
\text { Manegement } & 38 \
\text { Marketing } & 52 \
\text { Other } & 10 \
\hline
\end{array}$$ NARREND
-{Business School Graduates Narrative} Draw a pie chart of this data. Are you able to reconstruct the original data from this pie chart alone?

Accepted Answer

@#IMG-DLM& No; you cannot reconstruct th

Question 13

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-Nighter Narrative} Of those who stayed up all night before the midterm, what percentage did well on the midterm?

Accepted Answer

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

Question 14

The Dean of Students conducted a survey on campus. Class rank (Freshman, Sophomore, Junior, and Senior) is an example of a(n) ____________________ variable.

Accepted Answer

The answer of The Dean of Students conducted a survey...

Question 15

NARRBEGIN: Car Buyers
Car Buyers
Forty car buyers were asked to indicate which car dealer offered the best overall service. The four choices were Contour Motors (C), Modern Chrysler (M), Tonneau Auto (T), and Uncanny Chevrolet (U). The following data were obtained:
 $$\begin{array} { l l l l l l l l l } 
T&C&C&C&U&C&M&T&C&U\
U&M&C&M&T&C&M&M&C&M\
T&C&C&T&U&M&M&C&C&T\
T&U&C&U&T&M&M&C&U&T
\end{array}$$ NARREND
-{Car Buyers Narrative} Construct a frequency bar chart of this data. Which car dealer came in last place in terms of overall service?

Accepted Answer

@#IMG-DLM& Uncanny Chevrolet (U) receive

Question 16

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 the relative frequencies in the rows of a cross-classification table are similar, then the two variables shown in the table are not related.

Accepted Answer

A) True 
 B)False

Question 17

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} There is a relationship between whether or not a student stayed up all night before the midterm, and how well they did on the midterm. Describe this relationship using percentages.

Accepted Answer

Of those who stayed up all nig

Question 18

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 pie 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 19

Whether or not you are over the age of 21 is a nominal variable.

Accepted Answer

A) True 
 B)False

Question 20

Explain why religious preference is not an ordinal variable.

Accepted Answer

The values of religi

The classification of student class designation (freshman, sophomore, junior, senior) is an example of a(n)

Your age group (1-9; 10-19; 20-29; 30-39; etc.) is an interval variable.

Interval data may be treated as ordinal or nominal.

Two types of graphs that organize nominal data are and .

All calculations are permitted on what type of data?

Using the following cross-classification table, draw two pie charts that compare pet ownership for males vs. females. Are gender and pet ownership related? Own a pet Dan't own a pet Females 75 25 Males 40 60

Interval data, such as heights, weights, and incomes, are also referred to as quantitative or numerical data.

For which type of data are the values arbitrary numbers?

The Dean of Students conducted a survey on campus. Class rank (Freshman, Sophomore, Junior, and Senior) is an example of a(n) ____________________ variable.

Whether or not you are over the age of 21 is a nominal variable.

Explain why religious preference is not an ordinal variable.

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

The classification of student class designation (freshman, sophomore, junior, senior) is an example of a(n)

Your age group (1-9; 10-19; 20-29; 30-39; etc.) is an interval variable.

Interval data may be treated as ordinal or nominal.

Two types of graphs that organize nominal data are ____________________ and ____________________.

All calculations are permitted on what type of data?

Using the following cross-classification table, draw two pie charts that compare pet ownership for males vs. females. Are gender and pet ownership related? Own a pet Dan't own a pet Females 75 25 Males 40 60

Interval data, such as heights, weights, and incomes, are also referred to as quantitative or numerical data.

For which type of data are the values arbitrary numbers?

The Dean of Students conducted a survey on campus. Class rank (Freshman, Sophomore, Junior, and Senior) is an example of a(n) ____________________ variable.

Whether or not you are over the age of 21 is a nominal variable.

Explain why religious preference is not an ordinal variable.

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

Two types of graphs that organize nominal data are and .