EBK OM
6th Edition
ISBN: 9781305888210
Author: Collier
Publisher: YUZU
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Chapter 15, Problem 8PA
Summary Introduction
Interpretation: Run chart needs to be plotted based on the given data.
Concept Introduction: Run chart is a useful tool in analyzing the performance and process variation over time. It helps in summarizing the data graphically to easily identify the changes over time.
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In quality assurance, we use P-charts for discrete defects when there can be more than one defect per unit.
True or False. Why?
The results of an inspection of DNA samples takenover the past 10 days are given below. Sample size is 100.
a) Construct a 3-sigma p -chart using this information.
b) Using the control chart in part (a), and finding that the num-ber of defectives on the next three days are 12, 5, and 13, is the
process in control?
A quality control chart which controls a number of mistakes that a bank teller makes per month is:
a. C-chart.
b. P-chart.
c. R-chart.
d. X-chart.
e. U-chart.
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