ch01 - 1 1-1 The Engineering Method and Statistical...

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2 An engineer is someone who solves problems of interest to society by the efficient application of scientific principles by • Refining existing products • Designing new products or processes 1-1 The Engineering Method and Statistical Thinking 1-1 The Engineering Method and Statistical Thinking Figure 1.1 The engineering method
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3 The field of statistics deals with the collection, presentation, analysis, and use of data to • Make decisions • Solve problems • Design products and processes 1-1 The Engineering Method and Statistical Thinking • Statistical techniques are useful for describing and understanding variability . • By variability, we mean successive observations of a system or phenomenon do not produce exactly the same result. • Statistics gives us a framework for describing this variability and for learning about potential sources of variability . 1-1 The Engineering Method and Statistical Thinking
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4 Engineering Example An engineer is designing a nylon connector to be used in an automotive engine application. The engineer is considering establishing the design specification on wall thickness at 3/32 inch but is somewhat uncertain about the effect of this decision on the connector pull-off force. If the pull-off force is too low, the connector may fail when it is installed in an engine. Eight
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This note was uploaded on 09/21/2010 for the course EIN 3235 taught by Professor Zhai during the Spring '10 term at FIU.

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ch01 - 1 1-1 The Engineering Method and Statistical...

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