Let's Get M.A.D.
Use this applet to check your calculation of the M.A.D. for your data set.
Fill in the data column in the table (you can also change the heading from "Your Data" to a title that fits your data set).
The app will show you the mean, median, range, and Mean Absolute Deviation (M.A.D.) for your data set.
You can have as many as 15 data points.