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Frequency Tables and Histograms

Absolute Value | MathHelp.com

This lesson covers histograms. Students learn that a histogram is a type of bar graph that shows the frequency of data in various intervals (such as the number of residents in a given neighborhood that are age 21-30, age 31-40, and so on). Note that the difference between a histogram and a bar graph is that in a histogram, the data is organized into intervals. Students are then asked to create histograms using given data, and answer questions based on given histograms.

Probabilty Models and Two Way frequency tables

By Mr. Beamer's Math Videos

Using two way frequency tables to find probabilities

Mean and Expected Value of Discrete Random Variables

By statslectures

This video summarizes for us in less than two minutes how to find the expected value for a discrete random variable. In order to apply this to empirical data, form a histogram from your data and use that to determine relative frequencies.