CEE_110_08_Lecture_1

CEE_110_08_Lecture_1 - CEE 110 Introduction to Probability...

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CEE 110 Introduction to Probability and Statistics for Engineers Prof. Keith Stolzenbach
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Dealing with Variability and Uncertainty in the Real World • Describing variability and uncertainty ommunication of information Communication of information • Measuring variability and uncertainty esign of experiments and sampling programs – Design of experiments and sampling programs • Understanding variability and uncertainty robability models – Probability models – Confidence intervals and hypothesis testing elationships between variables – Relationships between variables
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Communication!
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Working with Data: Avoiding Bad Graphics
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riting about Statistics Writing about Statistics hich sentence is clearer? Which sentence is clearer? • “A t-test (t = 3.59) showed that the two groups ere significantly different (p<0 01) ” were significantly different (p<0.01).” • “Women scored higher than men on the aptitude test (t = 3.59, p < 0.01).” We will learn what “t = 3.59” and “p<0.01” mean and how to write clearly about results such as these.
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Measurements with Multiple ources of Variation Sources of Variation Manufacturing Process for tructural Components f Structural Components Batch 1 Batch 2 Batch 3 Batch 4 Batch 5 Sources of Variability: Process Sampling method 1 Sampling method 2 Sampling method 3 Sampling Test method 1 method 2 method 3 Testing Total Measured Variability How do we determine the relative importance of different sources of variability?
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esign of Sampling Programs Design of Sampling Programs ou want to quantify the You want to quantify the variability of PBDE in San Francisco Bay. • Existing data shows hot spots • You have $200,000 to spend on 20 samples locations. • Where do you locate them? http://pubs.acs.org/cgi-bin/article.cgi/esthag/2005/39/i01/pdf/es048905q.pdf
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robability Problems Probability Problems here are three doors, one of which opens to a There are three doors, one of which opens to a grand prize and the other two lead to nothing.
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This note was uploaded on 05/19/2011 for the course CEE 110 taught by Professor Stolzenbach during the Spring '08 term at UCLA.

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CEE_110_08_Lecture_1 - CEE 110 Introduction to Probability...

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