Question 1

Define binomial and Poisson distributions.State their probability functions.

Accepted Answer

Binomial Distribution:
The binomial dist

Question 2

A sample of size 16 is randomly selected from a population of size 90.Determine the standard error of the mean if the population standard deviation equals 20.

Accepted Answer

A) 2.11 
B) 4.16 
C) 4.56 
D) 5.00 
A) 2.11 
B) 4.16 
C) 4.56 
D) 5.00

Question 3

Three scatter diagrams are given below.How many of the diagrams present data that can be described by a linear relationship and,therefore,justifiably summarized by the correlation coefficient?
Plot A
 
Plot B
 
Plot C

Accepted Answer

A) Plot A 
B) Plot B 
C) Plot A and Plot B 
D) Plot A and Plot C 
A) Plot A 
B) Plot B 
C) Plot A and Plot B 
D) Plot A and Plot C

Question 4

Statistical methods help managers make sense of data and gain insight about the:

Accepted Answer

A) ability of using statistics and quality tools in daily work. 
B) nature of variation in all processes. 
C) nature of variation in the processes they manage. 
D) technology used for data analysis and visualization. 
A) ability of using statistics and quality tools in daily work. 
B) nature of variation in all processes. 
C) nature of variation in the processes they manage. 
D) technology used for data analysis and visualization.

Question 5

When interactions are present in an experiment,main effects have little meaning.

Accepted Answer

A) True 
 B)False

Question 6

The component of statistical methodology that includes the collection,organization,and summarization of data is called:

Accepted Answer

A) probability distribution. 
B) descriptive statistics. 
C) statistical inference. 
D) predictive statistics. 
A) probability distribution. 
B) descriptive statistics. 
C) statistical inference. 
D) predictive statistics.

Question 7

The conditional probability of an event A given that event B is known is given by:

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 8

Two events are independent if they have no outcomes in common.

Accepted Answer

A) True 
 B)False

Question 9

A frequency distribution is a table that shows the number of observations in each of several nonoverlapping groups.

Accepted Answer

A) True 
 B)False

Question 10

The median specifies the middle value when the data are arranged from smallest to largest.

Accepted Answer

A) True 
 B)False

Question 11

Statistics is a science concerned with the collection,organization,analysis,interpretation,and presentation of data.

Accepted Answer

A) True 
 B)False

Question 12

A confidence interval is an interval estimate of a population parameter that also specifies the likelihood that the interval contains the true population parameter.

Accepted Answer

A) True 
 B)False

Question 13

The Poisson distribution is closely related to the binomial distribution.

Accepted Answer

A) True 
 B)False

Question 14

In regression analysis,_____ measures the proportion of the variation in the dependent variable that is explained by the independent variable(s).

Accepted Answer

A) coefficient of correlation 
B) an F statistic 
C) coefficient of determination 
D) regression equation 
A) coefficient of correlation 
B) an F statistic 
C) coefficient of determination 
D) regression equation

Question 15

A random variable is a numerical description of the outcome of an experiment.

Accepted Answer

A) True 
 B)False

Question 16

What are some of the applications of statistics used in quality?

Accepted Answer

The applications include product design

Question 17

If random samples are not used,_____ may be introduced.

Accepted Answer

A) quality control 
B) bias 
C) testing 
D) probability 
A) quality control 
B) bias 
C) testing 
D) probability

Question 18

A testing engineer in a light bulb factory is planning a study to estimate the average life of a large shipment of light bulbs.The engineer wants to estimate the average life within plus or minus 16 hours with 95 percent confidence.Assuming a process standard deviation of 90 hours,determine the sample size for this study.

Accepted Answer

A) 7 
B) 43 
C) 58 
D) 122 
A) 7 
B) 43 
C) 58 
D) 122

Question 19

In which of the following companies,a high level of soldering defects was observed,necessitating 100 percent inspection for all circuit boards??

Accepted Answer

A)  GE Fanuc Company 
B)  Hewlett-Packard 
C)  Branch-Smith, Inc. 
D)  Berton Card Company 
A)  GE Fanuc Company 
B)  Hewlett-Packard 
C)  Branch-Smith, Inc. 
D)  Berton Card Company

Question 20

The sum of the probabilities over all possible outcomes must be between 0 and 1.

Accepted Answer

A) True 
 B)False

Define binomial and Poisson distributions.State their probability functions.

A sample of size 16 is randomly selected from a population of size 90.Determine the standard error of the mean if the population standard deviation equals 20.

Three scatter diagrams are given below.How many of the diagrams present data that can be described by a linear relationship and,therefore,justifiably summarized by the correlation coefficient? Plot A Plot B Plot C

Statistical methods help managers make sense of data and gain insight about the:

When interactions are present in an experiment,main effects have little meaning.

The component of statistical methodology that includes the collection,organization,and summarization of data is called:

The conditional probability of an event A given that event B is known is given by:

Two events are independent if they have no outcomes in common.

A frequency distribution is a table that shows the number of observations in each of several nonoverlapping groups.

The median specifies the middle value when the data are arranged from smallest to largest.

Statistics is a science concerned with the collection,organization,analysis,interpretation,and presentation of data.

A confidence interval is an interval estimate of a population parameter that also specifies the likelihood that the interval contains the true population parameter.

The Poisson distribution is closely related to the binomial distribution.

In regression analysis,_____ measures the proportion of the variation in the dependent variable that is explained by the independent variable(s).

A random variable is a numerical description of the outcome of an experiment.

What are some of the applications of statistics used in quality?

If random samples are not used,_____ may be introduced.

In which of the following companies,a high level of soldering defects was observed,necessitating 100 percent inspection for all circuit boards??

The sum of the probabilities over all possible outcomes must be between 0 and 1.

Introduction to Quality

Foundations of Quality Management

Customer Focus

Workforce Focus

Process Focus

Design for Quality and Product Excellence

Measuring and Controlling Quality

Process Improvement and Six Sigma

The Baldrige Framework for Performance Excellence

Strategy and Performance Excellence

Measurement and Knowledge Management for Performance Excellence

Leadership for Performance Excellence

Building and Sustaining Quality and Performance Excellence

Filters

Exam 6: Statistical Methods in Quality Management

Define binomial and Poisson distributions.State their probability functions.

A sample of size 16 is randomly selected from a population of size 90.Determine the standard error of the mean if the population standard deviation equals 20.

Three scatter diagrams are given below.How many of the diagrams present data that can be described by a linear relationship and,therefore,justifiably summarized by the correlation coefficient? Plot A Plot B Plot C

Statistical methods help managers make sense of data and gain insight about the:

When interactions are present in an experiment,main effects have little meaning.

The component of statistical methodology that includes the collection,organization,and summarization of data is called:

The conditional probability of an event A given that event B is known is given by:

Two events are independent if they have no outcomes in common.

A frequency distribution is a table that shows the number of observations in each of several nonoverlapping groups.

The median specifies the middle value when the data are arranged from smallest to largest.

Statistics is a science concerned with the collection,organization,analysis,interpretation,and presentation of data.

A confidence interval is an interval estimate of a population parameter that also specifies the likelihood that the interval contains the true population parameter.

The Poisson distribution is closely related to the binomial distribution.

In regression analysis,_____ measures the proportion of the variation in the dependent variable that is explained by the independent variable(s).

A random variable is a numerical description of the outcome of an experiment.

What are some of the applications of statistics used in quality?

If random samples are not used,_____ may be introduced.

In which of the following companies,a high level of soldering defects was observed,necessitating 100 percent inspection for all circuit boards??

The sum of the probabilities over all possible outcomes must be between 0 and 1.

Introduction to Quality

Foundations of Quality Management

Customer Focus

Workforce Focus

Process Focus

Design for Quality and Product Excellence

Measuring and Controlling Quality

Process Improvement and Six Sigma

The Baldrige Framework for Performance Excellence

Strategy and Performance Excellence

Measurement and Knowledge Management for Performance Excellence

Leadership for Performance Excellence

Building and Sustaining Quality and Performance Excellence

Filters