PDB_Stat_100_Lecture_02_Printable

PDB_Stat_100_Lecture_02_Printable - STA 100 Lecture 2 Paul...

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STA 100 Lecture 2 Paul Baines Department of Statistics University of California, Davis January 5th, 2011
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Admin for the Day I First homework will be posted on the website today, due Wednesday, Jan 12th in class
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Recap from Last Time I Course Logistics I Examples of Statistics in the World I Simpson’s Paradox: 1. Aggregate vs. Subgroup comparisons can disagree. Why? 2. Moral of the Course: ‘It depends’. Why?
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Topics for Today 1. Types of Data: 2. Exploratory Data Analysis: 3. Descriptive Statistics:
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Toxicology Example: Lead Data The Effect of Lead Exposure on Mental and Neurological Functions in Children. This was the datset for last quarters end-of-term project.
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Castaway Model For the lead example, and throughout the course, we will employ a castaway model i.e., if you were stranded on a desert island with no statistics books (and needed to do some statistics), these are the methods you would likely come up with.
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Toxicology Example: Lead Data I Variables: 1. Background: Age, Sex, Distance from smelter 2. Physical: blood lead levels (1972 & 1973), Pica, Colic, Irritability, Clumsiness 3. Neurological: IQ, Hyeractivity (WWP Scale), Right/Left Reaction Times (msec), Hand Movement (no. taps) I Observations: 124 Children.
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