Question 1

If an analyst computes statistics from a sample,the sample is by definition a statistical sample.

Accepted Answer

A) True 
 B)False  False

Question 2

Companies frequently use charts and graphs in their regular communications with stockholders and investors; this shows the use of descriptive statistics.

Accepted Answer

A) True 
 B)False  True

Question 3

The Cranston Company recently met with a group of its customers to ask questions about the service and products provided by the company.The data collected in this process would be an example of data collected through direct observation.

Accepted Answer

A) True 
 B)False  False

Question 4

What is meant by the term statistical inference?

Accepted Answer

A statistical inference is a conclusion

Question 5

Open-ended questions are typically included in a survey when the objective is to provide the maximum opportunity for the respondent to express his or her opinion.

Accepted Answer

A) True 
 B)False

Question 6

Selection bias occurs when the respondent decides which of the questions on the survey to answer.

Accepted Answer

A) True 
 B)False

Question 7

The Georgia Company,a pharmaceutical company,recently conducted a study in which 20 people were given a new drug and 20 other people were given a placebo.The objective was to determine whether there was a difference in pain relief between those using the new drug versus those using the placebo.The data collection used here is an example of an experiment.

Accepted Answer

A) True 
 B)False

Question 8

What is the underlying common element of all statistical sampling techniques?

Accepted Answer

The basis for all statistical sampling t

Question 9

One of the major challenges for developing a good written questionnaire or telephone survey instrument is that

Accepted Answer

A) nonresponses are too high. 
B) there will always be missed data. 
C) bias cannot be controlled. 
D) wording can influence responses. 
A) nonresponses are too high. 
B) there will always be missed data. 
C) bias cannot be controlled. 
D) wording can influence responses.

Question 10

It is possible for an interviewer to interject bias into the data collection project by the way he or she asks the questions.

Accepted Answer

A) True 
 B)False

Question 11

The method of data collection called direct observation is always associated with gathering data from people.

Accepted Answer

A) True 
 B)False

Question 12

A company that is interested in determining which of three prices to charge for its products has test marketed the product in three cities,each time using a different price for the product.The number of products sold in the first week is recorded.In this case,the data are considered to have been collected using an experiment.

Accepted Answer

A) True 
 B)False

Question 13

General Electric Corporation tracks employee turnover annually.It currently has a data set that contains turnover for the past 20 years.What type of data does it have?

Accepted Answer

A) Time-series data 
B) Cross-sectional data 
C) Nominal data 
D) Ordinal data 
A) Time-series data 
B) Cross-sectional data 
C) Nominal data 
D) Ordinal data

Question 14

A company conducted a survey of its employees to determine their level of satisfaction with various company policies.The data collected from this survey are:

Accepted Answer

A) primary data. 
B) secondary data. 
C) experimental data. 
D) census data. 
A) primary data. 
B) secondary data. 
C) experimental data. 
D) census data.

Question 15

The summaries of data,which may be in forms of 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 16

In Excel,what procedure is used to select random numbers?

Accepted Answer

A) The random numbers function 
B) Click on the Tools tab,then click on Data Analysis,then click on Sampling 
C) Click on the Tools tab,then click on Data Analysis,then click on Random Number Generation 
D) Random numbers are not available in Excel. 
A) The random numbers function 
B) Click on the Tools tab,then click on Data Analysis,then click on Sampling 
C) Click on the Tools tab,then click on Data Analysis,then click on Random Number Generation 
D) Random numbers are not available in Excel.

Question 17

When the production manager selects a sample of items that have been produced on her production line and computes the proportion of those items that are defective,the proportion is referred to as a statistic.

Accepted Answer

A) True 
 B)False

Question 18

When stratified random sampling is employed,the population is divided into homogeneous subgroups called strata.

Accepted Answer

A) True 
 B)False

Question 19

When a group of university students takes a poll of their fellow students on whether they support a proposed fee increase,the sampling method they would use when students walking near the library are surveyed would be called a random sample.

Accepted Answer

A) True 
 B)False

Question 20

When a company scans the bar codes on its products in an effort to count the number of products that remain in inventory,the company is collecting data through experimentation.

Accepted Answer

A) True 
 B)False

If an analyst computes statistics from a sample,the sample is by definition a statistical sample.

Companies frequently use charts and graphs in their regular communications with stockholders and investors; this shows the use of descriptive statistics.

The Cranston Company recently met with a group of its customers to ask questions about the service and products provided by the company.The data collected in this process would be an example of data collected through direct observation.

What is meant by the term statistical inference?

Open-ended questions are typically included in a survey when the objective is to provide the maximum opportunity for the respondent to express his or her opinion.

Selection bias occurs when the respondent decides which of the questions on the survey to answer.

What is the underlying common element of all statistical sampling techniques?

One of the major challenges for developing a good written questionnaire or telephone survey instrument is that

It is possible for an interviewer to interject bias into the data collection project by the way he or she asks the questions.

The method of data collection called direct observation is always associated with gathering data from people.

General Electric Corporation tracks employee turnover annually.It currently has a data set that contains turnover for the past 20 years.What type of data does it have?

A company conducted a survey of its employees to determine their level of satisfaction with various company policies.The data collected from this survey are:

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

In Excel,what procedure is used to select random numbers?

When the production manager selects a sample of items that have been produced on her production line and computes the proportion of those items that are defective,the proportion is referred to as a statistic.

When stratified random sampling is employed,the population is divided into homogeneous subgroups called strata.

When a group of university students takes a poll of their fellow students on whether they support a proposed fee increase,the sampling method they would use when students walking near the library are surveyed would be called a random sample.

When a company scans the bar codes on its products in an effort to count the number of products that remain in inventory,the company is collecting data through experimentation.

Graphs,charts and Tablesdescribing Your Data

Describing Data Using Numerical Measures

Using Probability and Probability Distributions

Discrete Probability Distributions

Introduction to Continuous Probability Distributions

Introduction to Sampling Distributions

Estimating Single Population Parameters

Introduction to Hypothesis Testing

Estimation and Hypothesis Testing for Two Population Parameters

Hypothesis Tests and Estimation for Population Variances

Analysis of Variance

Goodness-Of-Fit Tests and Contingency Analysis

Introduction to Linear Regression and Correlation Analysis

Multiple Regression Analysis and Model Building

Analyzing and Forecasting Time-Series Data

Introduction to Nonparametric Statistics

Introduction to Quality and Statistical Process Control

Introduction to Decision Analysis

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Exam 1: The Where, why, and How of Data Collection

If an analyst computes statistics from a sample,the sample is by definition a statistical sample.

Companies frequently use charts and graphs in their regular communications with stockholders and investors; this shows the use of descriptive statistics.

The Cranston Company recently met with a group of its customers to ask questions about the service and products provided by the company.The data collected in this process would be an example of data collected through direct observation.

What is meant by the term statistical inference?

Open-ended questions are typically included in a survey when the objective is to provide the maximum opportunity for the respondent to express his or her opinion.

Selection bias occurs when the respondent decides which of the questions on the survey to answer.

What is the underlying common element of all statistical sampling techniques?

One of the major challenges for developing a good written questionnaire or telephone survey instrument is that

It is possible for an interviewer to interject bias into the data collection project by the way he or she asks the questions.

The method of data collection called direct observation is always associated with gathering data from people.

General Electric Corporation tracks employee turnover annually.It currently has a data set that contains turnover for the past 20 years.What type of data does it have?

A company conducted a survey of its employees to determine their level of satisfaction with various company policies.The data collected from this survey are:

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

In Excel,what procedure is used to select random numbers?

When the production manager selects a sample of items that have been produced on her production line and computes the proportion of those items that are defective,the proportion is referred to as a statistic.

When stratified random sampling is employed,the population is divided into homogeneous subgroups called strata.

When a group of university students takes a poll of their fellow students on whether they support a proposed fee increase,the sampling method they would use when students walking near the library are surveyed would be called a random sample.

When a company scans the bar codes on its products in an effort to count the number of products that remain in inventory,the company is collecting data through experimentation.

Graphs,charts and Tablesdescribing Your Data

Describing Data Using Numerical Measures

Using Probability and Probability Distributions

Discrete Probability Distributions

Introduction to Continuous Probability Distributions

Introduction to Sampling Distributions

Estimating Single Population Parameters

Introduction to Hypothesis Testing

Estimation and Hypothesis Testing for Two Population Parameters

Hypothesis Tests and Estimation for Population Variances

Analysis of Variance

Goodness-Of-Fit Tests and Contingency Analysis

Introduction to Linear Regression and Correlation Analysis

Multiple Regression Analysis and Model Building

Analyzing and Forecasting Time-Series Data

Introduction to Nonparametric Statistics

Introduction to Quality and Statistical Process Control

Introduction to Decision Analysis

Filters