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DRIVE
SPRING
2016
PROGRAM
MBA
(SEM 3)
SUBJECT
CODE & NAME
QM0012
- STATISTICAL PROCESS CONTROL AND PROCESS CAPABILITY
1 What is SPC?
Differentiate SPC and SQC. Explain the history of SPC
SPC
Differentiate
SPC and SQC
History
of SPC
Answer: Statistical process
control is an optimization philosophy concerned
with continuous process improvements,
using a collection of (statistical) tools for:
·
data
and process analysis
·
making
2 Describe Deming’s
Funnel experiment and Red Bead Experiment.
Deming’s
Funnel experiment
Deming’s
Red Bead experiment
Answer: The Funnel
Experiment was devised by Dr. Deming to describe the adverse effects of
tampering with a process by making changes to it without first making a careful
study of the possible causes of the variation in
3 Write short notes on
a) Binomial Distribution
b)Normal Distribution
Explanation
of Binomial distribution with an example
Explanation
of Normal distribution with an example
Answer: Many types of
probability problems have only two outcomes, or they can be reduced to two
outcomes. For example, when a coin is
tossed, it can land heads or tails. when
a baby is born, it will be either male or female. In a basketball game, a team either wins or
loses. A true-false item can be answered
in
4 What is analysis of
variance? Explain the procedure for carrying out Two way analysis of Variance
with an example.
Meaning
of analysis of variance
Procedure
for carrying out Two way analysis of variance with an example
Answer: The analysis of
variance frequently referred to by the contraction ANOVA is a statistical
technique specially
5 Describe the EWMA
control chart
EWMA
control chart
Implementation
of EWMA control chart
Answer: Exponentially
Weighted Moving-Average control charts are a good substitute for the other
charts for detecting small shifts in the process mean. The Shewhart control
chart is not powerful for detecting small changes, say of the order of 1 - 1/2
standard deviations. The EWMA (exponentially weighted moving average) control
chart is better suited to this purpose. Exponentially Weighted Moving-
6 Explain the concept
of Process Capability. Distinguish between Process Stability and Capability.
Mention the major uses of Process Capability.
Explanation
of Process Capability
Differences
between Process Stability and Capability
Uses
of Process Capability
Answer: The Process
Capability is a measurable property of a process to the specification,
expressed as a process capability index or as a process performance index. The
output of this measurement is usually
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