Question 1

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) could be larger,smaller,or equal to 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) could be larger,smaller,or equal to 22

Question 2

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

Accepted Answer

A) inferential statistics 
B) descriptive statistics 
C) statistical inference 
D) report generation 
A) inferential statistics 
B) descriptive statistics 
C) statistical inference 
D) report generation

Question 3

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 4

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 5

In observational studies,the variable of interest

Accepted Answer

A) is not controlled 
B) is controlled 
C) must be numerical 
D) cannot be numerical 
A) is not controlled 
B) is controlled 
C) must be numerical 
D) cannot be numerical

Question 6

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.Sex2.Race (Black,White,Other)3.Age4.Number of hours completed5.Grade point average6.My instructor is a very effective teacher
  
-Refer to Exhibit 1-4.How many variables are in this data set?

Accepted Answer

A) 3 
B) 4 
C) 5 
D) 6 
A) 3 
B) 4 
C) 5 
D) 6

Question 7

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) descriptive statistics 
D) statistical inference 
A) a census 
B) an experiment 
C) descriptive statistics 
D) statistical inference

Question 8

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

Accepted Answer

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

Question 9

The process of analyzing sample data in order to draw conclusions about the characteristics of a population is called

Accepted Answer

A) descriptive statistics 
B) statistical inference 
C) data analysis 
D) data summarization 
A) descriptive statistics 
B) statistical inference 
C) data analysis 
D) data summarization

Question 10

All the data collected in a particular study are referred to as the

Accepted Answer

A) inference 
B) variable 
C) data set 
D) None of these alternatives is correct. 
A) inference 
B) variable 
C) data set 
D) None of these alternatives is correct.

Question 11

Statistical studies in which researchers control variables of interest are

Accepted Answer

A) experimental studies 
B) control observational studies 
C) non-experimental studies 
D) observational studies 
A) experimental studies 
B) control observational studies 
C) non-experimental studies 
D) observational studies

Question 12

The highway patrol is interested in determining the average speed of automobiles traveling on I-75 between Chattanooga and Atlanta.To accomplish this task,the speed of every tenth car passing a particular point on I-75 is recorded.
a.What is the population for this study?
b.What constitutes the sample?
c.Is speed a categorical or a quantitative variable?
d.What type of measurement scale is used?

Accepted Answer

a.All the automobile

Question 13

The following table shows the age distribution of a sample of 180 students at a local college.
   
a.Of the students in the sample,what percentage is younger than 20 years of age?
b.What percentage is at least 30 years of age?
c.Based on this sample,what percentage of the students at the college do you estimate to be younger than 25 years of age?

Accepted Answer

a.20%
b.22

Question 14

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) 5.0% 
B) 2.5% 
C) 200 
D) 10.0% 
A) 5.0% 
B) 2.5% 
C) 200 
D) 10.0%

Question 15

In Excel,a worksheet that displays the data for the problem and shows the results of the analysis is

Accepted Answer

A) a formula worksheet 
B) a value worksheet 
C) an absolute worksheet 
D) a descriptive worksheet 
A) a formula worksheet 
B) a value worksheet 
C) an absolute worksheet 
D) a descriptive worksheet

Question 16

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 17

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 18

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 19

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 20

A statistics professor asked students in a class their ages.On the basis of 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) a census 
B) descriptive statistics 
C) an experiment 
D) statistical inference 
A) a census 
B) descriptive statistics 
C) an experiment 
D) statistical inference

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

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

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

Which of the following is not a scale of measurement?

In observational studies,the variable of interest

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

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

The process of analyzing sample data in order to draw conclusions about the characteristics of a population is called

All the data collected in a particular study are referred to as the

Statistical studies in which researchers control variables of interest are

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

In Excel,a worksheet that displays the data for the problem and shows the results of the analysis is

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

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

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

Categorical data

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

Descriptive Statistics: Tabular and Graphical Presentations

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Statistical Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Tests of Goodness of Fit and Independence

Analysis of Variance and Experimental Design

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Index Numbers

Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Decision Analysis

Sample Survey

Filters

Exam 1: Data and Statistics

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

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

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

Which of the following is not a scale of measurement?

In observational studies,the variable of interest

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

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

The process of analyzing sample data in order to draw conclusions about the characteristics of a population is called

All the data collected in a particular study are referred to as the

Statistical studies in which researchers control variables of interest are

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

In Excel,a worksheet that displays the data for the problem and shows the results of the analysis is

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

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

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

Categorical data

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

Descriptive Statistics: Tabular and Graphical Presentations

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Statistical Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Tests of Goodness of Fit and Independence

Analysis of Variance and Experimental Design

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Index Numbers

Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Decision Analysis

Sample Survey

Filters