Did I Get This – Conditional Probability

Published: January 28th, 2013

Category: Activity 2: Did I Get This?

Consider the piercing example, where the following two-way table is given,

A table of the data. The column headings are "Pierced," "Not Pierced," and "Total." The Rows are "Male," "Female," and "Total." The data in the cells is given in "Row, Column: Value" format:         Male, Pierced: 36;         Male, Not Pierced: 144;         Male, Total: 180;         Female, Pierced: 288;         Female, Not Pierced: 32;         Female, Total: 320;         Total, Pierced: 324;         Total, Not Pierced: 176;         Total, Total: 500;

Recall also that M represents the event of being a male (“not M” represents being a female), and E represents the event of having one or both ears pierced.


This document is linked from Conditional Probability and Independence.