Let's Get M.A.D. Twice
Use these applets to check your calculation of the M.A.D. for each of your data sets.
Fill in the data column in each of the tables (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.