SENIOR CAPSTON DESIGN PROJECT

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SENIOR CAPSTON DESIGN PROJECT
ABET
Accreditation Board for Engineering and Technology
STATISTICS RELIABILITY CRITERIA
By
Prof. Reda Abdulaal
1426 H - 2005 G
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Requirements to ABET EC 2000

• Statistical analysis should be performed
• Design reliability should be assessed
• In some cases, risk assessment may be performed

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Requirements to ABET EC 2000
Statistical Analysis
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Statistical Analysis
What is Statistic?
It is SCIENCE of DATA
Pieces of information gathered by individuals
and/or organizations to gain knowledge
Set of methods for Collecting, Organizing, and
Analyzing
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What is Statistic?
It is SCIENCE of DATA
Set of methods of Collecting, Organizing, and
Analyzing pieces of information to gain knowledge
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Types of DATA
DATA
Qualitative
Quantitative
Ordinal
Nominal
Interval
Ratio
Can be counted (people, trees, etc.)
Can be recorded (cost, weight, etc.)
Can be assigned (ownership status 1-owner,
2-rent)
Can be arranged in order And difference between
number has meaning (IQ)
Can be arranged in order (excellent, very good,
good)
As Interval but there is Definite zero point (no.
of defects)
Discrete Data that contains only integers
Continuous Data that contains any value over a
particular range
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DATA
Pieces of information gathered by individuals
and/or organizations to gain knowledge
Population
Sample
Set of all possible information that is interest
Portion of the population from which information
is gathered
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WHO ?
WHY ?

• Scientists
• Chemists
• Engineers
• Decision makers
• Economists
• Every one wants to gain knowledge

• Inform the public
• Provide comparisons
• Explain outcomes
• Predict for future
• Establish a relationship
• Estimate unknown quantity

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SCIENCE
Set of methods of Collecting, Organizing, and
Analyzing
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Data COLLECTION Techniques Tools

• Using available information
• Observing
• Interviewing (face to face)
• Administrating written questionnaires

Data compilation forms
Eyes and other senses, watch, microscope
Tape recorder, checklist, questionnaire
Open/Close questionnaire
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Data COLLECTION Constraints
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Data COLLECTION Constraints
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Data COLLECTION Constraints
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Data COLLECTION Constraints
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SCIENCE
Set of methods of Collecting, Organizing, and
Analyzing
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Data ORGANIZATION Techniques

• Graphically
• Charts, graphs,
• Numerically
• Tables

The type of organization depends on the type of
analysis required
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Tabular vs. Graphical
Sectors Rank Revenue (SR million) Rank Net Profit (SR million)
Industrial 1 26280 3 2326
Banking 2 10397 2 4199
Electricity 3 7887 1 4411
Services 4 3656 5 681
Cement 5 1359 4 1231
Agricultural 6 1114 6 95
Total 50693 12943
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Tabular vs. Graphical
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SCIENCE
Set of methods of Collecting, Organizing, and
Analyzing
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Data ANALYSIS
Once the data is organized, various quantities
associated with the data can be computed.

• Mean
• Standard Deviation
• Correlation
• Moving average
• Exponential Smoothing

EXAMPLES
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What is Statistic?
It is SCIENCE of DATA
It is Set of methods of Collecting, Organizing,
and Analyzing pieces of information to gain
knowledge
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Requirements to ABET EC 2000
Design Reliability
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Definitions
Reliability How long will the system operate
before failure?
Design Reliability The level of reliability
inherent in the system as designed or manufactured
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Design Reliability

• Level of Reliability affects by
• Weakness in design
• Flaws in materials
• Defects from manufacturing process
• Maintenance errors
• Improper operation

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What is required?

• Design requirements to minimize the human errors
• Safety instructions
• Maintenance rules
• Operation manual
• Apply standards

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Requirements to ABET EC 2000
Risk Assessment
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Definitions
Risk Assessment Formal and systematic analysis to
identify and quantify probabilities and
consequences for personnel, environment,
production etc of all failures of
equipment/installation/facility
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What is required?

• Requirements to minimize the risk
• Recommendation report
• Use available tags

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THANKS