Question 1

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 2

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

Question 3

The following information regarding the top eight Fortune 500 companies was presented in an issue of Fortune Magazine.   
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 variables?
e.What measurement scale is used for each variable?

Accepted Answer

a.10
b.4
c.10
d.Sales and Prof

Question 4

Another name for "observations" is

Accepted Answer

A) views 
B) variables 
C) cases 
D) None of these alternatives is correct. 
A) views 
B) variables 
C) cases 
D) None of these alternatives is correct.

Question 5

For ease of data entry into a university database, 1 denotes that the student is an undergraduate and 2 indicates that the student is a graduate student. In this case data are

Accepted Answer

A) categorical 
B) quantitative 
C) either categorical or quantitative 
D) neither categorical nor quantitative 
A) categorical 
B) quantitative 
C) either categorical or quantitative 
D) neither categorical nor quantitative

Question 6

The collection of all elements of interest in a particular study is

Accepted Answer

A) the population 
B) the sampling 
C) statistical inference 
D) descriptive statistics 
A) the population 
B) the sampling 
C) statistical inference 
D) descriptive statistics

Question 7

In a sample of 400 students in a university, 80, or 20%, are Business majors. Based on the above information, the school's paper reported that "20% of all the students at the university are Business majors." This report 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 8

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 9

The set of measurements collected for a particular element is (are) called

Accepted Answer

A) variables 
B) observations 
C) samples 
D) None of these alternatives is correct. 
A) variables 
B) observations 
C) samples 
D) None of these alternatives is correct.

Question 10

The interval scale of measurement has the properties of the

Accepted Answer

A) ratio and nominal scales 
B) ratio and ordinal scales 
C) ratio scale 
D) None of these alternatives is correct. 
A) ratio and nominal scales 
B) ratio and ordinal scales 
C) ratio scale 
D) None of these alternatives is correct.

Question 11

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 12

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 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 13

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.   
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 14

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

Question 15

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

Accepted Answer

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

Question 16

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

Question 17

Some hotels ask their guests to rate the hotel's services as excellent, very good, good, and poor. This is an example of the

Accepted Answer

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

Question 18

Five hundred residents of a city are polled to obtain information on voting intentions in an upcoming city election. The five hundred residents in this study is an example of a(n)

Accepted Answer

A) census 
B) sample 
C) observation 
D) population 
A) census 
B) sample 
C) observation 
D) population

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

Data collected over several time periods are

Another name for "observations" is

For ease of data entry into a university database, 1 denotes that the student is an undergraduate and 2 indicates that the student is a graduate student. In this case data are

The collection of all elements of interest in a particular study is

In a sample of 400 students in a university, 80, or 20%, are Business majors. Based on the above information, the school's paper reported that "20% of all the students at the university are Business majors." This report is an example of

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

The set of measurements collected for a particular element is (are) called

The interval scale of measurement has the properties of the

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

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

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

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

Some hotels ask their guests to rate the hotel's services as excellent, very good, good, and poor. This is an example of the

Five hundred residents of a city are polled to obtain information on voting intentions in an upcoming city election. The five hundred residents in this study is an example of a(n)

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

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

Data collected over several time periods are

Another name for "observations" is

For ease of data entry into a university database, 1 denotes that the student is an undergraduate and 2 indicates that the student is a graduate student. In this case data are

The collection of all elements of interest in a particular study is

In a sample of 400 students in a university, 80, or 20%, are Business majors. Based on the above information, the school's paper reported that "20% of all the students at the university are Business majors." This report is an example of

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

The set of measurements collected for a particular element is (are) called

The interval scale of measurement has the properties of the

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

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

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

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

Some hotels ask their guests to rate the hotel's services as excellent, very good, good, and poor. This is an example of the

Five hundred residents of a city are polled to obtain information on voting intentions in an upcoming city election. The five hundred residents in this study is an example of a(n)

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