Question 1

The sample result plotted on an np control chart is _____.

Accepted Answer

A)  np 
B)  np 
C)  the number of perfect units in the sample 
D)  the number of defective units in the sample 
A)  np 
B)  np 
C)  the number of perfect units in the sample 
D)  the number of defective units in the sample D

Question 2

Normal or natural variations in the quality of production output that are due purely to chance are _____.

Accepted Answer

A)  common causes 
B)  assignable causes 
C)  control causes 
D)  None of the answers is correct. 
A)  common causes 
B)  assignable causes 
C)  control causes 
D)  None of the answers is correct. A

Question 3

A form of acceptance sampling in which more than one sample or stage is used is called a _____.

Accepted Answer

A)  single-sample plan 
B)  multiple-sampling plan 
C)  multinomial sampling plan 
D)  None of the answers is correct. 
A)  single-sample plan 
B)  multiple-sampling plan 
C)  multinomial sampling plan 
D)  None of the answers is correct. B

Question 4

In acceptance sampling, the risk of accepting a poor quality lot is known as _____.

Accepted Answer

A)  consumer's risk 
B)  producer's risk 
C)  a Type I error 
D)  None of the answers is correct. 
A)  consumer's risk 
B)  producer's risk 
C)  a Type I error 
D)  None of the answers is correct.

Question 5

A control chart used when the output of a process is measured in terms of the mean value of a variable such as a length, weight, temperature, and so on is a(n) _____ chart.

Accepted Answer

A)  p 
B)  x-bar 
C)  R 
D)  np 
A)  p 
B)  x-bar 
C)  R 
D)  np

Question 6

The sample result plotted on a p chart is the _____.

Accepted Answer

A)  proportion nondefective 
B)  passing (inspection) percentage 
C)  proportion defective 
D)  number of defectives 
A)  proportion nondefective 
B)  passing (inspection) percentage 
C)  proportion defective 
D)  number of defectives

Question 7

Which of the following is a statistical method used in quality control?

Accepted Answer

A)  statistical process control 
B)  acceptance sampling 
C)  Both statistical process control and acceptance sampling are correct. 
D)  None of the answers is correct. 
A)  statistical process control 
B)  acceptance sampling 
C)  Both statistical process control and acceptance sampling are correct. 
D)  None of the answers is correct.

Question 8

In practice, it is common to use the sample _____ to estimate the process _____.

Accepted Answer

A)  variances, range 
B)  means, variance 
C)  standard deviations, mean 
D)  ranges, standard deviation 
A)  variances, range 
B)  means, variance 
C)  standard deviations, mean 
D)  ranges, standard deviation

Question 9

Which of the following observed on a control chart suggests a process that is NOT in control?

Accepted Answer

A)  Points follow a smooth pattern from the lower control limit to the upper control limit. 
B)  The number of points above and below the center line is about the same. 
C)  Points fall randomly above and below the center line. 
D)  No points are outside the control limits. 
A)  Points follow a smooth pattern from the lower control limit to the upper control limit. 
B)  The number of points above and below the center line is about the same. 
C)  Points fall randomly above and below the center line. 
D)  No points are outside the control limits.

Question 10

Process control and acceptance sampling procedures are most closely related to _____.

Accepted Answer

A)  linear regression procedures 
B)  interval estimation procedures 
C)  hypothesis testing procedures 
D)  analysis of variance procedures 
A)  linear regression procedures 
B)  interval estimation procedures 
C)  hypothesis testing procedures 
D)  analysis of variance procedures

Question 11

The entire system of policies, procedures, and guidelines established by an organization to achieve and maintain quality is called _____.

Accepted Answer

A)  quality control 
B)  quality engineering 
C)  quality assurance 
D)  both quality control and quality engineering 
A)  quality control 
B)  quality engineering 
C)  quality assurance 
D)  both quality control and quality engineering

Question 12

The Malcolm Baldrige National Quality Award was established in _____.

Accepted Answer

A)  1954 
B)  1971 
C)  1987 
D)  1993 
A)  1954 
B)  1971 
C)  1987 
D)  1993

Question 13

Variations in the quality of production output that are due to factors such as machine tools wearing out are _____.

Accepted Answer

A)  common causes 
B)  assignable causes 
C)  control causes 
D)  None of the answers is correct. 
A)  common causes 
B)  assignable causes 
C)  control causes 
D)  None of the answers is correct.

Question 14

The general practice in quality control is to set the control chart's upper and lower control limit values equal to the variable's mean value +/- _____.

Accepted Answer

A)  1 standard deviation 
B)  2 standard deviations 
C)  2.5 standard deviations 
D)  3 standard deviations 
A)  1 standard deviation 
B)  2 standard deviations 
C)  2.5 standard deviations 
D)  3 standard deviations

Question 15

The second stage of a two-stage acceptance sampling plan is executed when the first-stage result is _____.

Accepted Answer

A)  x1 > c1 
B)  c1 1 2 
C)  x1 > c2 
D)  x1 > c1 + c2 
A)  x1 > c1 
B)  c1 1 2 
C)  x1 > c2 
D)  x1 > c1 + c2

Question 16

In contrast to Deming's philosophy, which required a major cultural change in the organization, Juran's programs were designed to improve quality by _____.

Accepted Answer

A)  working within the current organizational system 
B)  reducing the number of levels in the organizational structure 
C)  changing customer perception and expectations 
D)  identifying and replacing the most counterproductive employees 
A)  working within the current organizational system 
B)  reducing the number of levels in the organizational structure 
C)  changing customer perception and expectations 
D)  identifying and replacing the most counterproductive employees

Question 17

Rejecting a poor-quality lot would be a _____.

Accepted Answer

A)  Type I error 
B)  Type II error 
C)  correct decision 
D)  None of the answers is correct. 
A)  Type I error 
B)  Type II error 
C)  correct decision 
D)  None of the answers is correct.

Question 18

The control limits for an x-bar chart are how many standard deviations above and below the process mean?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
A)  one 
B)  two 
C)  three 
D)  four

Question 19

A control chart that is used when the output of a production process is measured in terms of the proportion defective is a(n) _____ chart.

Accepted Answer

A)  p 
B)  x-bar 
C)  R 
D)  np 
A)  p 
B)  x-bar 
C)  R 
D)  np

Question 20

When a Motorola executive said "That evaluation is … perhaps the most cost-effective, value-added business consultation available anywhere in the world today" he was referring to _____.

Accepted Answer

A)  ISO 9000 standards 
B)  the Six Sigma philosophy 
C)  Deming's 14 points 
D)  the Malcolm Baldrige Quality Award 
A)  ISO 9000 standards 
B)  the Six Sigma philosophy 
C)  Deming's 14 points 
D)  the Malcolm Baldrige Quality Award

Exam 19: Statistical Methods for Quality Control

The sample result plotted on an np control chart is _____.

Normal or natural variations in the quality of production output that are due purely to chance are _____.

A form of acceptance sampling in which more than one sample or stage is used is called a _____.

In acceptance sampling, the risk of accepting a poor quality lot is known as _____.

A control chart used when the output of a process is measured in terms of the mean value of a variable such as a length, weight, temperature, and so on is a(n) _____ chart.

The sample result plotted on a p chart is the _____.

Which of the following is a statistical method used in quality control?

In practice, it is common to use the sample _____ to estimate the process _____.

Which of the following observed on a control chart suggests a process that is NOT in control?

Process control and acceptance sampling procedures are most closely related to _____.

The entire system of policies, procedures, and guidelines established by an organization to achieve and maintain quality is called _____.

The Malcolm Baldrige National Quality Award was established in _____.

Variations in the quality of production output that are due to factors such as machine tools wearing out are _____.

The general practice in quality control is to set the control chart's upper and lower control limit values equal to the variable's mean value +/- _____.

The second stage of a two-stage acceptance sampling plan is executed when the first-stage result is _____.

In contrast to Deming's philosophy, which required a major cultural change in the organization, Juran's programs were designed to improve quality by _____.

Rejecting a poor-quality lot would be a _____.

The control limits for an x-bar chart are how many standard deviations above and below the process mean?

A control chart that is used when the output of a production process is measured in terms of the proportion defective is a(n) _____ chart.

When a Motorola executive said "That evaluation is … perhaps the most cost-effective, value-added business consultation available anywhere in the world today" he was referring to _____.

Data and Statistics

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

Tests of Goodness of Fit, Independence, and Multiple Proportions

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Decision Analysis

Sample Survey

Filters

In practice, it is common to use the sample _ to estimate the process _.