Question 1

Ordinary arithmetic operations are meaningful

Accepted Answer

A) only with categorical data 
B) only with quantitative data 
C) either with quantitative or categorical data 
D) None of these alternatives is correct. 
A) only with categorical data 
B) only with quantitative data 
C) either with quantitative or categorical data 
D) None of these alternatives is correct.

Question 2

A recent issue of a national magazine reported that in a national public opinion survey conducted among 2,000 individuals, 56% were in favor of gun control, 40% opposed gun control, and 4% had no opinion on the subject.
a.What is the sample in this survey?
b.Based on the sample, what percentage of the population would you think is in favor of gun control?
c.Based on the sample, what percentage of the population would you think have no opinion on the subject?

Accepted Answer

a.The 2000 individua

Question 3

Statistical inference

Accepted Answer

A) refers to the process of drawing inferences about the sample based on the characteristics of the population 
B) is the same as descriptive statistics 
C) is the process of drawing inferences about the population based on the information taken from the sample 
D) is the same as a census 
A) refers to the process of drawing inferences about the sample based on the characteristics of the population 
B) is the same as descriptive statistics 
C) is the process of drawing inferences about the population based on the information taken from the sample 
D) is the same as a census

Question 4

Statistical studies in which researchers do not control variables of interest are

Accepted Answer

A) experimental studies 
B) uncontrolled experimental studies 
C) not of any value 
D) observational studies 
A) experimental studies 
B) uncontrolled experimental studies 
C) not of any value 
D) observational studies

Question 5

Exhibit 1-4
In many universities, students evaluate their professors by means of answering a questionnaire. Assume a questionnaire is distributed to a class of 45 students. Students are asked to answer the following:
1.  Sex
2.  Race (African descent, Caucasian, Other)
3.  Age
4.  Number of hours completed
5.  Grade point average
6.  My instructor is a very effective teacher
-Refer to Exhibit 1-4. How many elements are in the above data set?

Accepted Answer

A) 5 
B) 6 
C) 3 
D) 45 
A) 5 
B) 6 
C) 3 
D) 45

Question 6

A population is

Accepted Answer

A) the same as a sample 
B) the selection of a random sample 
C) the collection of all items of interest in a particular study 
D) always the same size as the sample 
A) the same as a sample 
B) the selection of a random sample 
C) the collection of all items of interest in a particular study 
D) always the same size as the sample

Question 7

The scale of measurement that is simply a label for the purpose of identifying the attribute of an element is the

Accepted Answer

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

Question 8

Quantitative data

Accepted Answer

A) are always nonnumeric 
B) may be either numeric or nonnumeric 
C) are always numeric 
D) None of these alternatives is correct. 
A) are always nonnumeric 
B) may be either numeric or nonnumeric 
C) are always numeric 
D) None of these alternatives is correct.

Question 9

The following information regarding the ten richest Americans was reported in a recent issue of Forbes.   
a.How many elements are in the above data set?
b.How many variables are in this data set?
c.How many observations are in this data set?
d.Which variables are categorical and which are quantitative?
e.What measurement scale is used for each variable?

Accepted Answer

a.10
b.5
c.10
d.Worth and Age

Question 10

In a sample of 800 students in a university, 240, or 30%, are Business majors. The 30% is an example of

Accepted Answer

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

Question 11

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 12

An interviewer has made an error in recording the data. This type of error is known as

Accepted Answer

A) an experimental error 
B) a data acquisition error 
C) a non-experimental error 
D) a conglomerate error 
A) an experimental error 
B) a data acquisition error 
C) a non-experimental error 
D) a conglomerate error

Question 13

Temperature 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 14

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 15

The subject of data mining deals with

Accepted Answer

A) methods for developing useful decision-making information from large data bases 
B) keeping data secure so that unauthorized individuals cannot access the data 
C) computational procedure for data analysis 
D) computing the average for data 
A) methods for developing useful decision-making information from large data bases 
B) keeping data secure so that unauthorized individuals cannot access the data 
C) computational procedure for data analysis 
D) computing the average for data

Question 16

The process of capturing, storing, and maintaining data is known as

Accepted Answer

A) data manipulation 
B) data monitoring 
C) data warehousing 
D) category analysis 
A) data manipulation 
B) data monitoring 
C) data warehousing 
D) category analysis

Question 17

Social security numbers consist of numeric values. Therefore, social security is an example of

Accepted Answer

A) a quantitative variable 
B) either a quantitative or a categorical variable 
C) an exchange variable 
D) a categorical variable 
A) a quantitative variable 
B) either a quantitative or a categorical variable 
C) an exchange variable 
D) a categorical variable

Question 18

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 manager's statement that 40% of Daisy City's 2,000 homes are in violation of city codes is

Accepted Answer

A) an exactly correct statement 
B) only an approximation, since it is based upon sample information 
C) obviously wrong, since it is based upon a study of only 200 homes 
D) None of these alternatives is correct. 
A) an exactly correct statement 
B) only an approximation, since it is based upon sample information 
C) obviously wrong, since it is based upon a study of only 200 homes 
D) None of these alternatives is correct.

Question 19

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 20

In Excel, a worksheet that displays the formulas used to create the results is a

Accepted Answer

A) results worksheet 
B) formula worksheet 
C) value worksheet 
D) sample worksheet 
A) results worksheet 
B) formula worksheet 
C) value worksheet 
D) sample worksheet

Ordinary arithmetic operations are meaningful

Statistical inference

Statistical studies in which researchers do not control variables of interest are

A population is

The scale of measurement that is simply a label for the purpose of identifying the attribute of an element is the

Quantitative data

In a sample of 800 students in a university, 240, or 30%, are Business majors. The 30% is an example of

Arithmetic operations are inappropriate for

An interviewer has made an error in recording the data. This type of error is known as

Temperature is an example of

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

The subject of data mining deals with

The process of capturing, storing, and maintaining data is known as

Social security numbers consist of numeric values. Therefore, social security is an example of

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 manager's statement that 40% of Daisy City's 2,000 homes are in violation of city codes is

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

In Excel, a worksheet that displays the formulas used to create the results is a

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, Test of Independence and Goodness of Fit

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

Index Numbers

Decision Analysis on Website

Sample Survey on Website

Filters

Exam 1: Data and Statistics

Ordinary arithmetic operations are meaningful

Statistical inference

Statistical studies in which researchers do not control variables of interest are

A population is

The scale of measurement that is simply a label for the purpose of identifying the attribute of an element is the

Quantitative data

In a sample of 800 students in a university, 240, or 30%, are Business majors. The 30% is an example of

Arithmetic operations are inappropriate for

An interviewer has made an error in recording the data. This type of error is known as

Temperature is an example of

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

The subject of data mining deals with

The process of capturing, storing, and maintaining data is known as

Social security numbers consist of numeric values. Therefore, social security is an example of

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 manager's statement that 40% of Daisy City's 2,000 homes are in violation of city codes is

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

In Excel, a worksheet that displays the formulas used to create the results is a

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, Test of Independence and Goodness of Fit

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

Index Numbers

Decision Analysis on Website

Sample Survey on Website

Filters