April 2026
Beginner
288 pages
5h 34m
English
Content preview from Probability Workbook For Dummies
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Chapter 4
Setting the Contingency Table with Probabilities
IN THIS CHAPTER
Organizing probabilities into contingency tables
Finding joint, marginal, and conditional probabilities
Checking to see if two variables are independent or dependent
A contingency table is a table with rows and columns: rows for one event or variable, and columns for another event or variable. You classify the outcomes of the combinations of the events by putting their probabilities in the appropriate row/column combination. In Chapter 3, you saw how to take the values of a tree, multiply them together, and put them into a table format. That was a contingency table.
In this chapter, you work with 
contingency tables, which have two rows and two columns. The rows represent A and 
; the columns represent B and 
. The intersections in the table are called the cells of the table, and the probabilities for the cells ...
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