Question 1

A purpose of the Funnel Experiment is to demonstrate the effect of 'tampering.'

Accepted Answer

A) True 
 B)False

Question 2

The collectively exhaustive set of outcomes from an experiment makes up a _____.

Accepted Answer

A) random set 
B) population 
C) sample space 
D) random variable. 
A) random set 
B) population 
C) sample space 
D) random variable.

Question 3

Suppose that a scatter diagram depicts a relationship between the two variables that can be summarized by a straight line.The correlation coefficient is computed and results in a value of -0.73.Which of the following is NOT TRUE?

Accepted Answer

A) There is a negative relationship between the two variables. 
B) Two other variables having a correlation coefficient of -0.87 would have a stronger linear relationship. 
C) In general, an increase in one variable is associated with an increase in the other variable. 
D) Even though the correlation coefficient is less than zero, the correlation coefficient still communicates the strength of the linear relationship. 
A) There is a negative relationship between the two variables. 
B) Two other variables having a correlation coefficient of -0.87 would have a stronger linear relationship. 
C) In general, an increase in one variable is associated with an increase in the other variable. 
D) Even though the correlation coefficient is less than zero, the correlation coefficient still communicates the strength of the linear relationship.

Question 4

Everything else remaining constant,when the sample size increases:

Accepted Answer

A) the variance decreases. 
B) the variance increases. 
C) the variance is unaffected. 
D) the variance could increase or decrease. 
A) the variance decreases. 
B) the variance increases. 
C) the variance is unaffected. 
D) the variance could increase or decrease.

Question 5

Define the following terms:
a.Parameter
b.Point estimate
c.Random variable
d.Standard error of the mean

Accepted Answer

Parameters are characteristics of popula

Question 6

Explain the following statement:
"The only way to reduce common cause variation is to change the technology of the process."

Accepted Answer

Common cause variation stems f

Question 7

_____ is the process of drawing conclusions about unknown characteristics of a population from which data are taken.

Accepted Answer

A) Logical inference 
B) Post-data inference 
C) Statistical inference 
D) Random inference 
A) Logical inference 
B) Post-data inference 
C) Statistical inference 
D) Random inference

Question 8

The number of defects observed in a sample is an example of a continuous random variable.

Accepted Answer

A) True 
 B)False

Question 9

Differentiate between an enumerative study and an analytic study.Which type of study is more appropriate for descriptive statistics,hypothesis testing on the population mean,and time-series analysis?

Accepted Answer

The analysis of a static population is r

Question 10

At the process level,statistical thinking can motivate managers in all of the following EXCEPT:

Accepted Answer

A) developing and assessing standardized project management systems. 
B) setting realistic goals. 
C) using data from the entire organization to assess performance. 
D) focusing on the process without blaming employees for variation. 
A) developing and assessing standardized project management systems. 
B) setting realistic goals. 
C) using data from the entire organization to assess performance. 
D) focusing on the process without blaming employees for variation.

Question 11

One of the most common types of experimental designs in which all combinations of levels of each factor are considered is called a _____ experiment.

Accepted Answer

A) combination 
B) factorial 
C) multilevel 
D) simple experiment 
A) combination 
B) factorial 
C) multilevel 
D) simple experiment

Question 12

Calculating the average value of 5 sample measurements of door width is an example of:

Accepted Answer

A) descriptive statistics. 
B) statistical inference. 
C) predictive statistics. 
D) analytical statistics. 
A) descriptive statistics. 
B) statistical inference. 
C) predictive statistics. 
D) analytical statistics.

Question 13

Sample ______ are often used as estimators of population _______.

Accepted Answer

A) parameters, parameters 
B) statistics, statistics 
C) statistics, parameters 
D) parameters, statistics 
A) parameters, parameters 
B) statistics, statistics 
C) statistics, parameters 
D) parameters, statistics

Question 14

The sampling method where every item in the population has an equal probability of being selected is called:

Accepted Answer

A) simple random sampling. 
B) stratified sampling. 
C) systematic sampling. 
D) judgment sampling. 
A) simple random sampling. 
B) stratified sampling. 
C) systematic sampling. 
D) judgment sampling.

Question 15

A typical group is selected,and a random sample is taken from within the group.This is an example of _____ sampling.

Accepted Answer

A) simple 
B) stratified 
C) cluster 
D) judgment 
A) simple 
B) stratified 
C) cluster 
D) judgment

Question 16

As the sample size increases,the standard error of the mean increases,all else being held constant.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is NOT a tool for descriptive statistics?

Accepted Answer

A) Frequency distribution 
B) Regression analysis 
C) Proportion 
D) Histogram 
A) Frequency distribution 
B) Regression analysis 
C) Proportion 
D) Histogram

Question 18

A confidence interval is a point estimate of a population parameter.

Accepted Answer

A) True 
 B)False

Question 19

If two variables are negatively correlated,when one variable takes on a positive value,the other variable takes on a negative value.

Accepted Answer

A) True 
 B)False

Question 20

In hypothesis testing,the null hypothesis,H?,is assumed to be false in the absence of contradictory data.

Accepted Answer

A) True 
 B)False

A purpose of the Funnel Experiment is to demonstrate the effect of 'tampering.'

The collectively exhaustive set of outcomes from an experiment makes up a _____.

Suppose that a scatter diagram depicts a relationship between the two variables that can be summarized by a straight line.The correlation coefficient is computed and results in a value of -0.73.Which of the following is NOT TRUE?

Everything else remaining constant,when the sample size increases:

Define the following terms: a.Parameter b.Point estimate c.Random variable d.Standard error of the mean

Explain the following statement: "The only way to reduce common cause variation is to change the technology of the process."

_____ is the process of drawing conclusions about unknown characteristics of a population from which data are taken.

The number of defects observed in a sample is an example of a continuous random variable.

Differentiate between an enumerative study and an analytic study.Which type of study is more appropriate for descriptive statistics,hypothesis testing on the population mean,and time-series analysis?

At the process level,statistical thinking can motivate managers in all of the following EXCEPT:

One of the most common types of experimental designs in which all combinations of levels of each factor are considered is called a _____ experiment.

Calculating the average value of 5 sample measurements of door width is an example of:

Sample are often used as estimators of population _.

The sampling method where every item in the population has an equal probability of being selected is called:

A typical group is selected,and a random sample is taken from within the group.This is an example of _____ sampling.

As the sample size increases,the standard error of the mean increases,all else being held constant.

Which of the following is NOT a tool for descriptive statistics?

A confidence interval is a point estimate of a population parameter.

If two variables are negatively correlated,when one variable takes on a positive value,the other variable takes on a negative value.

In hypothesis testing,the null hypothesis,H?,is assumed to be false in the absence of contradictory data.

Introduction

Total Quality In Organizations

Philosophies And Frameworks

Strategic Focus For Performance Excellence

Focusing On Customers

High Performance Workforce Management

Process Management

Performance Measurement And Information Management

Leading, building, and Sustaining Performance Excellence

Six Sigma And Process Improvement

Design For Quality And Product Excellence

Statistical Process Control

Filters

Exam 10: Statistical Thinking And Applications

A purpose of the Funnel Experiment is to demonstrate the effect of 'tampering.'

The collectively exhaustive set of outcomes from an experiment makes up a _____.

Suppose that a scatter diagram depicts a relationship between the two variables that can be summarized by a straight line.The correlation coefficient is computed and results in a value of -0.73.Which of the following is NOT TRUE?

Everything else remaining constant,when the sample size increases:

Define the following terms: a.Parameter b.Point estimate c.Random variable d.Standard error of the mean

Explain the following statement: "The only way to reduce common cause variation is to change the technology of the process."

_____ is the process of drawing conclusions about unknown characteristics of a population from which data are taken.

The number of defects observed in a sample is an example of a continuous random variable.

Differentiate between an enumerative study and an analytic study.Which type of study is more appropriate for descriptive statistics,hypothesis testing on the population mean,and time-series analysis?

At the process level,statistical thinking can motivate managers in all of the following EXCEPT:

One of the most common types of experimental designs in which all combinations of levels of each factor are considered is called a _____ experiment.

Calculating the average value of 5 sample measurements of door width is an example of:

Sample ______ are often used as estimators of population _______.

The sampling method where every item in the population has an equal probability of being selected is called:

A typical group is selected,and a random sample is taken from within the group.This is an example of _____ sampling.

As the sample size increases,the standard error of the mean increases,all else being held constant.

Which of the following is NOT a tool for descriptive statistics?

A confidence interval is a point estimate of a population parameter.

If two variables are negatively correlated,when one variable takes on a positive value,the other variable takes on a negative value.

In hypothesis testing,the null hypothesis,H?,is assumed to be false in the absence of contradictory data.

Introduction

Total Quality In Organizations

Philosophies And Frameworks

Strategic Focus For Performance Excellence

Focusing On Customers

High Performance Workforce Management

Process Management

Performance Measurement And Information Management

Leading, building, and Sustaining Performance Excellence

Six Sigma And Process Improvement

Design For Quality And Product Excellence

Statistical Process Control

Filters

Sample are often used as estimators of population _.