Presenting, Describing and Inferring from a Sample of Categorical Data 
Learning Objectives 
At the end of the module, the student will: Understand basic probability concepts. 
The following sub modules contain summary notes for the three content topic areas of Module 5. Module 5.1: Simple, Joint, Marginal and Conditional Probabilities 
Assignment 
This is an optional assignment. Use the three tables of data from an airline satisfaction survey at the bottom of this page to answer the assignment questions. The survey was given to passengers after they took a trip on this particular airline (adopted from Levine, 2000). The first table cross classifies passengers (survey participants) by their gender and whether or not they stated that this particular airline is the airline of their first choice when flying. For example, 512 male passengers indicated that this airline is the airline of their first choice. The second table cross classifies airline of choice by primary reason for their last airline trip; and the third table cross classifies primary reason for travel by baggage disposition. Please note: this exercise requires that you do the Excel analysis. This is good practice and helps prepare you to use this technique in the future. However, for the final exam, I will provide the Excel data analysis input/output so the exam concentrates on your interpretations and conclusions from the Excel input/output. If you wish to omit the Excel analysis, please refer to my Excel printouts that I will forward via email when we get to this module. Using Microsoft Excel for the analysis, 1. Reference the Gender Table. Is there significant evidence that the proportion of passengers who state that this airline is their airline of choice differs from 50%? Note: templates are provided for analysis of the contingency tables in Module 5.3 Notes. 
Optional Text Reading 
Anderson, D., Sweeney, D., & Williams, T. (2001). Contemporary Business Statistics with Microsoft Excel. Cincinnati, OH: SouthWestern. Chapter 4 
Gender Table
Is this your airline of choice? 








Airline Choice/Primary Reason Table
Is this your airline of choice? / Reason for flying 














Primary Reason/Baggage Disposition Table
Reason for Travel /
Baggage Disposition


