SENIOR CAPSTON DESIGN PROJECT ABET Accreditation Board for Engineering and Technology SENIOR CAPSTON DESIGN PROJECT STATISTICS & RELIABILITY CRITERIA By Prof. Reda Abdulaal 1426 H - 2005 G
Requirements to ABET EC 2000 Statistical analysis should be performed Design reliability should be assessed In some cases, risk assessment may be performed
Requirements to ABET EC 2000 Statistical Analysis
Set of methods for Collecting, Organizing, and Analyzing 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
What is Statistic? It is SCIENCE of DATA Set of methods of Collecting, Organizing, and Analyzing pieces of information to gain knowledge
Discrete or Continuous Types of DATA DATA Qualitative Quantitative Ordinal Nominal Interval Ratio Can be recorded (cost, weight, etc.) Can be counted (people, trees, etc.) Discrete Discrete or Continuous 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) Discrete: Data that contains only integers As Interval but there is Definite zero point (no. of defects) Continuous: Data that contains any value over a particular range
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 Data may be difficult to obtain Data may be expensive to collect WHY ?
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
Set of methods of Collecting, Organizing, and Analyzing SCIENCE Set of methods of Collecting, Organizing, and Analyzing
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
Set of methods of Collecting, Organizing, and Analyzing SCIENCE Set of methods of Collecting, Organizing, and Analyzing
Data ORGANIZATION Techniques Graphically Charts, graphs, … Numerically Tables The type of organization depends on the type of analysis required
Tabular vs. Graphical Sectors Rank Revenue (SR million) Net Profit Industrial 1 26280 3 2326 Banking 2 10397 4199 Electricity 7887 4411 Services 4 3656 5 681 Cement 1359 1231 Agricultural 6 1114 95 Total 50693 12943
Tabular vs. Graphical
Set of methods of Collecting, Organizing, and Analyzing SCIENCE Set of methods of Collecting, Organizing, and Analyzing
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
What is Statistic? It is SCIENCE of DATA It is Set of methods of Collecting, Organizing, and Analyzing pieces of information to gain knowledge
Requirements to ABET EC 2000 Design Reliability
Definitions Reliability Design Reliability How long will the system operate before failure? Design Reliability The level of reliability inherent in the system as designed or manufactured
Design Reliability Level of Reliability affects by: Weakness in design Flaws in materials Defects from manufacturing process Maintenance errors Improper operation
What is required? Design requirements to minimize the human errors: Safety instructions Maintenance rules Operation manual Apply standards
Requirements to ABET EC 2000 Risk Assessment
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
What is required? Requirements to minimize the risk: Recommendation report Use available tags
THANKS