Question 1

The Department of Transportation of a city has noted that on the average there are 17 accidents per day. The average number of accidents is an example of

Accepted Answer

A)  Data and Statistics 
B)  statistical inference 
C)  a sample 
D)  a population 
A)  Data and Statistics 
B)  statistical inference 
C)  a sample 
D)  a population A

Question 2

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

Accepted Answer

A)  time series data 
B)  approximate time series data 
C)  crossectional data 
D)  approximate data 
A)  time series data 
B)  approximate time series data 
C)  crossectional data 
D)  approximate data C

Question 3

Income is an example of

Accepted Answer

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

Question 4

Exhibit 1-2
In a sample of 1,600 registered voters, 912, or 57%, approve of the way the President is doing his job.
-Refer to Exhibit 1-2. The 57% approval is an example of

Accepted Answer

A)  a sample 
B)  Data and Statistics 
C)  statistical inference 
D)  a population 
A)  a sample 
B)  Data and Statistics 
C)  statistical inference 
D)  a population

Question 5

Exhibit 1-5
The following is a frequency distribution of the monthly expenditures for long distance telephone service of 200 households in Chattanooga.
 $\begin{array}{|c|c|c|}
\hline\text { Class } & \text { Expenditure \$) } & \text { \# of households } \
\hline 1 & 0 \text { and under } 20 & 42 \
\hline 2 & 20 \text { and under 40 } & 64 \
\hline 3 & 40 \text { and under } 60 & 34 \
\hline 4 & 60 \text { and under } 80 & 28 \
\hline 5 & 80 \text { and under } 100 & 20 \
\hline 6 & 100 \text { and over } & 12\\hline
\end{array}$
-Refer to Exhibit 1-5. What is the proportion of households with monthly expenditure for long distance service of either below $60 or at least $100?

Accepted Answer

A)  .70 
B)  .76 
C)  .84 
D)  .53 
A)  .70 
B)  .76 
C)  .84 
D)  .53

Question 6

Which of the following variables use the ratio scale of measurement?

Accepted Answer

A)  social security number 
B)  temperature 
C)  gender 
D)  income 
A)  social security number 
B)  temperature 
C)  gender 
D)  income

Question 7

Arithmetic operations are inappropriate for

Accepted Answer

A)  categorical data 
B)  quantitative data 
C)  both categorical and quantitative data 
D)  large data sets 
A)  categorical data 
B)  quantitative data 
C)  both categorical and quantitative data 
D)  large data sets

Question 8

The weight of a candy bar in ounces is an example of

Accepted Answer

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

Question 9

Michael, Inc., a manufacturer of electric guitars, is a small firm with 50 employees. The table below shows the hourly wage distribution of the employees.
 $$\begin{array} { c c } 
\text { Hourl Wages In Dollars) } & \text { Number of Employees } \
10 - 13 & \mathbf { 8 } \
14 - 17 & 12 \
18 - 21 & 20 \
22 - 25 & 10
\end{array}$$ 
a. How many employees receive hourly wages of at least $18?
b. What percentage of the employees has hourly wages of at least $18?
c. What percentage of the employees has hourly wages of less than $14?

Accepted Answer

The answer of Michael, Inc., a manufacturer of electric guitars,...

Question 10

The number of cases will always be the same as the number of

Accepted Answer

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

Question 11

Categorical data

Accepted Answer

A)  indicate either how much or how many 
B)  cannot be numeric 
C)  are labels used to identify attributes of elements 
D)  must be nonnumeric 
A)  indicate either how much or how many 
B)  cannot be numeric 
C)  are labels used to identify attributes of elements 
D)  must be nonnumeric

Question 12

Methods for developing useful decision-making information from large data bases is known as

Accepted Answer

A)  data manipulation 
B)  data monitoring 
C)  data base conversion 
D)  data mining 
A)  data manipulation 
B)  data monitoring 
C)  data base conversion 
D)  data mining

Question 13

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

Accepted Answer

A)  is always smaller than the mean of the population 
B)  is always larger than the mean of the population 
C)  must be equal to the mean of the population 
D)  can be larger, smaller, or equal to the mean of the population 
A)  is always smaller than the mean of the population 
B)  is always larger than the mean of the population 
C)  must be equal to the mean of the population 
D)  can be larger, smaller, or equal to the mean of the population

Question 14

Which of the following is not a scale of measurement?

Accepted Answer

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

Question 15

The following national weather report gives the temperatures and weather conditions on the previous day in cities across the nation.
 $\begin{array}{|l|c|c|l|}
\hline {\text { City }} & \text { Hi } & \text { Low } & \text { Condition } \
\hline \text { Albany, N.Y. } & 88 & 60 & \text { cloudy } \
\hline \text { Chicago } & 92 & 64 & \text { d ear } \\hline \text { Dallas-Ft. Worth } & 89 & 72 & \text { cloudy } \
\hline \text { Denver } & 75 & 54 & \text { clear } \
\hline \text { Hartford } & 88 & 61 & \text { cloudy } \
\hline \text { Honolulu } & 86 & 70 & \text { clear } \
\hline \text { Kansas City } & 93 & 74 & \text { clear } \
\hline \text { Los Angeles } & 80 & 62 & \text { cloudy } \
\hline \text { Nashville } & 94 & 72 & \text { rain } \
\hline \text { New York City } & 90 & 69 & \text { rain } \
\hline \text { Philadelphia } & 90 & 67 & \text { rain } \
\hline
\end{array}$ 
a. How many elements are in this data set?
b. How many variables are in this data set?
c. How many observations are there in the above data set?
d. Which variables are categorical and which are quantitative?
e. What measurement scale is used for temperature and weather conditions?

Accepted Answer

a. 11
b. 3
c. 11
d. Temperatur

Question 16

Which of the following is a scale of measurement?

Accepted Answer

A)  ratio 
B)  primal 
C)  divisional 
D)  remedial 
A)  ratio 
B)  primal 
C)  divisional 
D)  remedial

Question 17

One hundred students from a large university were asked about their opinion on the new health care program. The 100 represents

Accepted Answer

A)  a sample 
B)  a population 
C)  statistical inference 
D)  Data and Statistics 
A)  a sample 
B)  a population 
C)  statistical inference 
D)  Data and Statistics

Question 18

The sample size

Accepted Answer

A)  can be larger than the population size 
B)  is always smaller than the population size 
C)  can be larger or smaller than the population size 
D)  is always equal to the size of the population 
A)  can be larger than the population size 
B)  is always smaller than the population size 
C)  can be larger or smaller than the population size 
D)  is always equal to the size of the population

Question 19

Exhibit 1-1
In a recent study based upon an inspection of 200 homes in Daisy City, 80 were found to violate one or more city codes.
-Refer to Exhibit 1-1. The city manager released a statement that 40% of Daisy City's 2,000 homes are in violation of city codes. The manager's statement is an example of

Accepted Answer

A)  a census 
B)  an experiment 
C)  Data and Statistics 
D)  statistical inference 
A)  a census 
B)  an experiment 
C)  Data and Statistics 
D)  statistical inference

Question 20

Data collected over several time periods are

Accepted Answer

A)  time series data 
B)  time controlled data 
C)  crossectional data 
D)  time crossectional data 
A)  time series data 
B)  time controlled data 
C)  crossectional data 
D)  time crossectional data

The Department of Transportation of a city has noted that on the average there are 17 accidents per day. The average number of accidents is an example of

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

Income is an example of

Exhibit 1-2 In a sample of 1,600 registered voters, 912, or 57%, approve of the way the President is doing his job. -Refer to Exhibit 1-2. The 57% approval is an example of

Which of the following variables use the ratio scale of measurement?

Arithmetic operations are inappropriate for

The weight of a candy bar in ounces is an example of

The number of cases will always be the same as the number of

Categorical data

Methods for developing useful decision-making information from large data bases is known as

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

Which of the following is not a scale of measurement?

Which of the following is a scale of measurement?

One hundred students from a large university were asked about their opinion on the new health care program. The 100 represents

The sample size

Data collected over several time periods are

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

Comparisons Involving Means, Experimental Design, and Analysis of Variance

Comparisons Involving Proportions and a Test of Independence

Simple Linear Regression

Multiple Regression

Filters

Exam 1: Data and Statistics

The Department of Transportation of a city has noted that on the average there are 17 accidents per day. The average number of accidents is an example of

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

Income is an example of

Exhibit 1-2 In a sample of 1,600 registered voters, 912, or 57%, approve of the way the President is doing his job. -Refer to Exhibit 1-2. The 57% approval is an example of

Which of the following variables use the ratio scale of measurement?

Arithmetic operations are inappropriate for

The weight of a candy bar in ounces is an example of

The number of cases will always be the same as the number of

Categorical data

Methods for developing useful decision-making information from large data bases is known as

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

Which of the following is not a scale of measurement?

Which of the following is a scale of measurement?

One hundred students from a large university were asked about their opinion on the new health care program. The 100 represents

The sample size

Data collected over several time periods are

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

Comparisons Involving Means, Experimental Design, and Analysis of Variance

Comparisons Involving Proportions and a Test of Independence

Simple Linear Regression

Multiple Regression

Filters