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Notes 1 - $ ST3241 Categorical Data Analysis I An...

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& $ % ST3241 Categorical Data Analysis I An Introduction 1
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& $ % Some Objectives Of This Course Analyzing binomial and Poisson variables in real data. Visualizing and analyzing categorical data. How to use SAS and / or R for the above purposes. Provide hands-on practice with real life data. 2
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& $ % Some Topics To Be Covered Introduction to Categorical Data Two-way Contingency Tables Three-way Contingency Tables Generalized Linear Models 3
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& $ % Some Topics To Be Covered Logistic Regression Loglinear Models Multicategory Logit Models Models for Matched Pairs (if Time Permits) 4
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& $ % Software To Be Used SAS: Only for use in Statistics Computer Labs You can’t download them in your own PC. R: This is a freeware and you can install it in your own PC Website: http://www.r-project.org 5
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& $ % Let’s Begin With An Example Belief in Afterlife Gender Yes No or or Undecided Females 435 147 Males 375 134 1091 people responded to a survey by their gender and their belief in an afterlife. Is there any association between gender and their belief in afterlife? 6
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& $ % Another Example For the 23 space shuttle flights (Ft) that occurred before the Challenger mission disaster in 1986, the following table shows the temperature (Temp) at the time of flight and whether at least one primary O-ring suffered thermal distress (TD). 7
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& $ % The Data Ft Temp TD Ft Temp TD Ft Temp TD 1 66 0 9 57 1 17 70 0 2 70 1 10 63 1 18 81 0 3 69 0 11 70 1 19 76 0 4 68 0 12 78 0 20 79 0 5 67 0 13 67 0 21 75 1 6 72 0 14 53 1 22 76 0 7 73 0 15 67 0 23 58 1 8 70 0 16 75 0 Is there any association between Temperature and thermal distress?
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