Probability and Statistics for Engineering and the Sciences (with Student Suite Online)

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Winter, 2008 Monday, Jan. 7 Stat 321 – Lecture 1 Descriptive Statistics (Ch. 1) Describing Quantitative Data 1) Shape 2) Center 3) Spread 4) Unusual observations Example: Data from 1999 New Car Buyer’s Guide 39 34 29 24 15 10 5 0 hwy mpg Frequency 25 20 15 10 15 10 5 0 fuel cap Frequency 4000 3000 2000 20 10 0 weight Frequency 19.0 18.5 18.0 17.5 17.0 16.5 16.0 15.5 15.0 14.5 14.0 20 10 0 1/4 mile Frequency Example 2: The following table contains the weights of the 2004 Men’s Olympic rowing team, as well as the name of the event that they competed in.
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Winter, 2008 Monday, Jan. 7 Name Wt. Event Name Wt. event Abdullah 185 double sculls Ruckman 155 LW double sculls Ahrens 215 Eight Samsonov 185 pair Allen 210 Eight Schroeder 229 four Beery 215 Eight Smack 195 quad sculls Cipollone 120 Eight Smith 160 LW four Deakin 200 Eight Teti 160 LW four DuRoss 210 quad sculls Todd 154 LW four Hansen 210 Eight Tucker 153 LW double sculls Holbrook 195 quad sculls Volpenhein 215 eight Hoopman 185 Eight Walton 180 pair Klugh
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Unformatted text preview: Moser 210 Four Wherley 215 four Nuzum 210 double sculls Wilkinson 190 quad sculls Read 180 Eight (a) For the following dotplot, include an appropriate label on both axes. (b) Summarize the key features of the distribution of rowers’ weights. Suggest explanations for the unusual features. (c) Consider the following stem and leaf plot of this distribution as produced by Minitab Due this week: • Complete online Stat 321 questionnaire in Blackboard (under Assignments link) • Finish reading Ch. 1 by Friday and bring questions to class (and ask them!) • Finish reading the syllabus and ask questions in class • Download Minitab and begin using “at home” • Lab 1 due beginning of class on Friday – meeting in 35-111B...
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