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DRIVE Fall 2014
PROGRAM/SEMESTER
MBADS (SEM 3/SEM 5) MBAFLEX/ MBAN2 (SEM 3) PGDTQMN (SEM 1)
SUBJECT CODE &
NAME QM0012 STATISTICAL PROCESS CONTROL AND PROCESS CAPABILITY
Q.1
Explain the concept of Cause and Effect Diagram, Check Sheet and Scatter
Diagram.
Explanation
of Cause and effect diagram
Explanation
of Check Sheet
Explanation
of Scatter Diagram
ANS:
Explanation
of Cause and effect diagram:
Cause and Effect Diagram, also
called as “fish bone diagram” or “Ishikawa diagram”, shows relationships
between events and is a useful analysis in generating ideas and in identifying
the root cause of problem. It the cause and effect diagram is used to explore
all the potential or real causes (or inputs) that result in a single effect (or
output).Causes
Q.2
Describe
Deming’s Funnel experiment and Red Bead Experiment.
Deming’s
Funnel experiment
Deming’s
Red Bead experiment
ANS:
Deming’s
Funnel experiment:
W. Edwards Deming has stated, “If
someone adjusts a stable process (one exhibiting common causes of variation) to
try to compensate for a result that is undesirable, or for a result that is
extra good, the output that follows will be worse than if he had left the
process alone”. This is called over control of the process or “tampering”. If
management
Q.3
Write short notes on
a) Binomial
Distribution
b) Normal
Distribution
ANS:
Explanation
of Binomial distribution with an example:
When a Bernoulli experiment is
repeated for “n” number of times, then it is called a binomial process.
Binomial distribution is a discrete probability distribution. Its probability
mass function is given by:
Q.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
ANS:
Meaning
of analysis of variance:
The Analysis of Variance is one
of the most powerful statistical techniques. It is a statistical test for
heterogeneity of means by analysis of group variances. The analysis of variance
technique, developed by R.A. Fisher in 1920s, is capable of fruitful
application to diversity or practical problems. Basically, it consists of
classifying and cross-classifying statistical results and testing whether the
means of a specified classification differ significantly. In this
Q.5
Discuss the types of control charts. Explain with an example how to calculate p
Chart and np Chart.
Concept
of Control charts
Control
charts for variables
Control
charts for attributes
Calculation
of p chart and np chart with an example
ANS:
Concept
of Control charts:
A control chart is a graphical
representation of the collected information. The information may pertain to
measured quality characteristics or judged quality characteristics of samples.
It detects the variation in processing and warns if there is any departure from
the specified tolerance limits. The control limits on the chart are so placed
as to disclose the presence or absence of the assignable causes of quality
variation. This makes possible the diagnosis and
Q.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
ANS:
Explanation
of Process Capability:
A process capability study is
performed for two primary reasons:
1. To predict future capability
of the process to produce product within specification
2. To identify process
improvement opportunities
Process capability is a
statistical analysis of variation of the process output compared to the
allowable specification limits. Process capability, hence, is the repeatability
and consistency of a manufacturing process relative to the customer
requirements in terms of specification limits of a product parameter. This
measure is used to objectively
Get fully solved assignment, plz drop a mail with your sub code
computeroperator4@gmail.com
Charges for mba rs 125/subject and rs 700/semester only.
For other rs 125/subject only
if urgent then call us
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