Devry BSOP326 week 3 checkpoint

Question 1.1. TCO 11) A standard deviation is a _____.
(Points : 2)
sample
descriptive
statistic
census
inference
statistic

Question 2.2. TCO 11) An arbitrary sample of pertinent data
is a _____. (Points : 2)
judgment sample
simple random
sample
systematic
sample
stratified
sample

Question 3.3. (TCO 11) The sampling method in which every
item in the population has an equal probability of being selected is called
which of the following? (Points : 2)
Simple random
sampling
Stratified
sampling
Systematic
sampling
Judgment sampling

Question 4.4. (TCO 11) Samples are selected to obtain data
about the characteristics of _____. (Points : 2)
an experiment
statistic
a population
parameter

Question 5.5. (TCO 11) A system governed only by common
cause variation is a system that exhibits which of the following? (Points : 2)
It is highly
productive
In control
It meets a
customer’s quality specifications.
It has zero
natural variation.

Question 6.6. (TCO 12) Which of the following tools is used
to identify and isolate causes of a problem? (Points : 2)
Shewart diagram
Scatter diagram

Cause-and-effect diagram
Histogram

Question 7.7. (TCO 12) Another name for a cause-and-effect
diagram is which of the following? (Points : 2)
Histogram
Run chart
Check sheet
Fishbone
diagram

Question 8.8. (TCO 12) SPC allows workers to separate the
_____ causes of variation from natural causes. (Points : 2)
random
special
catastrophic
surprising

Question 9.9. (TCO 12) Which of the following charts is used
to monitor the total number of defects per unit when a constant subgroup size is
employed? (Points : 2)
S-chart
C-chart
P-chart
U-chart

Question 10.10. (TCO 12) A bank observes that most customer
complaints come from only a small subset of its total customer base. This is an
example of which of the following? (Points : 2)
Clustering
analysis
The Pareto
principle
Data skewing
The central
limit theorem

Question 11.11. (TCO 12) Determine the sample standard
deviation(s) for the following data: 7, 8, 2, 1, 3, and 5. (Points : 5)
s = 2.805
s = 3.266
s = 2.927
s = 3.578

Question 12.12. (TCO 12) Six samples of subgroup size 6 (n=6)
were collected. Determine the upper control limit (UCL) for an X-Bar chart if
the mean of the sample averages is 4.7 and mean of the sample ranges is 0.35. .
CHART (Points : 5)
UCL = 4.86905
UCL = 4.90195
UCL = 4.72250
UCL = 5.05805

Question 13.13. (TCO 12) Twenty samples of subgroup size of
5 (n = 5) were collected for a variable measurement. Determine the upper
control limit (UCL) for an R-chart if the mean of the sample ranges equals 4.4.

TABLE (Points : 5)
UCL = 9.3060
UCL = 1.4695
UCL = 11.3256
UCL = 8.8176
Page 2
Question 1. 1. (TCO 11) Describe how a frequency
distribution relates to process variability. (Points : 5)

Question 2. 2. (TCO 11) From the standpoint of SPC, what
does the standard deviation measure? (Points : 5)

Question 3. 3. (TCO 11) Describe the purpose of a
cause-and-effect diagram. (Points : 5)

Question 4. 4. (TCO 12) Explain the difference between Type
I and Type II errors in the context of a control chart. Why is it important to
give operators control over their processes? (Points : 5)

Question 5. 5. (TCO 12) Outline the basic steps for setting
up a control chart to monitor a process and determine its process capability.
(Points : 5)