Question 1

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 2

In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of a

Accepted Answer

A) categorical variable 
B) quantitative variable 
C) categorical or quantitative variable, depending on how the respondents answered the question 
D) None of these alternatives is correct. 
A) categorical variable 
B) quantitative variable 
C) categorical or quantitative variable, depending on how the respondents answered the question 
D) None of these alternatives is correct.

Question 3

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 4

Quantitative data refers to data obtained with a(n)

Accepted Answer

A) ordinal scale 
B) nominal scale 
C) either interval or ratio scale 
D) only interval scale 
A) ordinal scale 
B) nominal scale 
C) either interval or ratio scale 
D) only interval scale

Question 5

Data

Accepted Answer

A) are always be numeric 
B) are always nonnumeric 
C) are the raw material of statistics 
D) None of these alternatives is correct. 
A) are always be numeric 
B) are always nonnumeric 
C) are the raw material of statistics 
D) None of these alternatives is correct.

Question 6

Exhibit 1-3
Part of the data bank of a corporation is shown below.  
-Refer to Exhibit 1-3. Employee Rank is an example of ________ data.

Accepted Answer

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

Question 7

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 8

The following table shows the starting salaries of a sample of recent business graduates.   
a.What percentage of graduates in the sample had starting salaries of at least $30,000?
b.Of the graduates in the sample, what percentage had starting salaries of less than $25,000?
c.Based on this sample, what percentage of all business graduates do you estimate to have starting salaries of at least $20,000?

Accepted Answer

The answer of The following table shows the starting salaries...

Question 9

Income is an example of a variable that uses the

Accepted Answer

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

Question 10

A survey to collect data on the entire population is

Accepted Answer

A) a census 
B) a sample 
C) a population 
D) an inference 
A) a census 
B) a sample 
C) a population 
D) an inference

Question 11

Arithmetic operations are appropriate for

Accepted Answer

A) only the ratio scale 
B) only the interval scale 
C) the nominal scale 
D) None of these alternatives is correct. 
A) only the ratio scale 
B) only the interval scale 
C) the nominal scale 
D) None of these alternatives is correct.

Question 12

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 13

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 14

The following shows the temperatures (high, low) and weather conditions in a given Sunday for some selected world cities. For the weather conditions, the following notations are used: c = clear; cl = cloudy; sh = showers; pc = partly cloudy.   
a.How many elements are in this data set?
b.How many variables are in this data set?
c.How many observations are in this data set?
d.Name the variables and indicate whether they are categorical or quantitative.
e.For which variables are arithmetic operations appropriate and for which are they not appropriate?

Accepted Answer

a.7
b.3
c.7
d.Hi: quantitative

Question 15

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 16

The scale of measurement that has an inherent zero value defined 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 17

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. A political pollster states: "Fifty-seven percent of all voters approve of the President." This statement is an example of

Accepted Answer

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

Question 18

Which scale of measurement can be either numeric or nonnumeric?

Accepted Answer

A) nominal 
B) ratio 
C) interval 
D) None of these alternatives is correct. 
A) nominal 
B) ratio 
C) interval 
D) None of these alternatives is correct.

Question 19

The entities on which data are collected are

Accepted Answer

A) elements 
B) populations 
C) samples 
D) None of these alternatives is correct. 
A) elements 
B) populations 
C) samples 
D) None of these alternatives is correct.

Question 20

How many scales of measurement exist?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

In observational studies, the variable of interest

In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of a

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

Quantitative data refers to data obtained with a(n)

Data

Exhibit 1-3 Part of the data bank of a corporation is shown below. -Refer to Exhibit 1-3. Employee Rank is an example of ________ data.

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

Income is an example of a variable that uses the

A survey to collect data on the entire population is

Arithmetic operations are appropriate for

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

Which of the following is not a scale of measurement?

The scale of measurement that has an inherent zero value defined is the

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. A political pollster states: "Fifty-seven percent of all voters approve of the President." This statement is an example of

Which scale of measurement can be either numeric or nonnumeric?

The entities on which data are collected are

How many scales of measurement exist?

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

In observational studies, the variable of interest

In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of a

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

Quantitative data refers to data obtained with a(n)

Data

Exhibit 1-3 Part of the data bank of a corporation is shown below. -Refer to Exhibit 1-3. Employee Rank is an example of ________ data.

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

Income is an example of a variable that uses the

A survey to collect data on the entire population is

Arithmetic operations are appropriate for

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

Which of the following is not a scale of measurement?

The scale of measurement that has an inherent zero value defined is the

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. A political pollster states: "Fifty-seven percent of all voters approve of the President." This statement is an example of

Which scale of measurement can be either numeric or nonnumeric?

The entities on which data are collected are

How many scales of measurement exist?

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