Example 3

Ms. Scanlon surveys her students about the time they spend studying. She creates a table showing the amount of time students studied and the score each student earned on a recent test. Ms. Scanlon wants to understand the distribution of scores among all the students, and to get a sense of how students are performing and how much students are studying. Find the conditional relative frequencies, expressed as decimals.

[list=1] [*]Find the total number of students represented in the table by summing the joint frequencies. [*]Divide each joint frequency by the total number of students. [*]Represent the conditional joint frequencies in a new table. [/list] This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit [url="http://www.walch.com"]www.walch.com[/url] for more information on their resources.