Two-way relative frequency tables

The  exercise appears under the 8th Grade Math Mission. This exercise practices interpreting a two-way contingency table.

Types of Problems
There are two types of problems in this exercise:


 * 1) Interpret the information in the table: This problem provides a two-way table and a few statements. The student is asked to select the statement that can be inferred from the table.Trft1.png
 * 2) Use the two-way table to find some percentages: This problem provides a two-way table and the student is asked to take the information and make it into a relative frequency table with rows or column frequencies.Trft2.png

Strategies
Knowledge of percentage and an ability to read and understand two-way tables are needed to ensure accuracy and efficiency on this exercise.
 * 1) If the 1.00 are on the far right column, one will divide the row total. If the 1.00 are on the bottom row, the percentages are column totals.

Real-life Applications

 * 1) Data in two-way tables show up in the news and print so an ability to read and interpret these can be used.