Section 7: Course wrap-up Kevin Dunn€¦ · Final exam: more strategies I Read the questions...
Transcript of Section 7: Course wrap-up Kevin Dunn€¦ · Final exam: more strategies I Read the questions...
Statistics for EngineeringSection 7: Course wrap-up
Kevin Dunn
Copyright, and all rights reserved, Kevin Dunn, 2012http://stats4eng.connectmv.com
April 2012
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Univariate section
I Histograms
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Univariate section
I Normal distribution and q-q plot
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Univariate section
I When you have plenty of reference data
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Univariate section
I Tests for differences
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Process monitoring
I General example:
I Cpk: width of process operation
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Least squares
I Objective function
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Least squares
Modely = b1x1 + b2x2
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Least squares
I Example of integer and continuous variables
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Design and analysis of experimentsI Doing it wrong:
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Design and analysis of experimentsI Factorial model: is a local approximation
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Design and analysis of experiments
I DOE models are just least squares models:
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Design and analysis of experimentsI Use the trade-off table: bring a copy of it to the exam
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Design and analysis of experiments
Model is only valid in alocal region
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Final exam
I Saturday, 07 April
I 3 hours
I 100 marks (4C3) and 110 marks (6C3)
I Counts 45% of the course grade; or 60% if you missed midterm
I Very infrequent access to email next week
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Final exam: how to do well
I This is a course that gives you a set of tools
I Often multiple ways to answer a question
I Think about the question’s objective; choose the most appropriatetool
I Think about the results: what do they mean? Check if they arereasonable.
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Final exam: some strategies
I Do the hardest questions and the highest weighted questions first
I Short quick questions at the end
I Don’t repeat the question back to me
I Use bullet points, where appropriate
I Answer length is appropriate to number of marksI Midterm: received half-page answers for 1 or 2 marks
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Final exam: more strategies
I Read the questions carefully: ”[2] Calculate and interpret..”
I Treat the exam like a closed-book exam, referring to your noteswhen necessary
I Go through previous assignments
I Uncover the objective of the question,
I Do not just plug in values into equations
I Copies of previous exam questions are on the course siteI Questions prior to 2010 are not mineI 2010 and 2011 exam available on website
I Bring a copy of DOE table to exam
I Bring a copy of statistical tables to exam
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Final exam: content
All sections appear in the exam:
1. Visualizing data
2. Univariate statistics
3. Process monitoring
4. Least squares modelling
5. Design and analysis of experiments (DOE)
6. Latent variable methods
usually in combined form
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Finally ...
I If you have any corrections to the notes (grammar, spelling, etc) -please don’t hesitate to email me
I Any suggestions to improve the notes gratefully accepted
I The course website will be permanently available
http://stats4eng.connectmv.com
I Course notes will eventually become an online book
Process Improvement using Data
http://pid.connectmv.com
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Finally ...
I I’d like to hear about your successes with these methods
I Also any issues and problems in using these tools
I Feel free to email me:I kevin.dunnconnectmv.com or dunnkgmcmaster.ca
I Thanks for your interest, your questions, your excellent projects andassignments
I Thanks for test-driving the class notes (you are the 3rd group now)
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