This is a graphical solution for the problem 3 in the 2nd problem set of the Udacity Statistics 101.

The hardest part about this problem is to translate it from human language to human-friendly language.

This is a graphical solution for the problem 3 in the 2nd problem set of the Udacity Statistics 101.

The hardest part about this problem is to translate it from human language to human-friendly language.

Here is a link to another HTML5 demo – a Venn Pie Chart showing solutions for simple Bayesian problems.

The point I am trying to make is that solution is the ratio between the areas of the silver and gray sectors, or, rather, lengths of corresponding arcs.

Here is a link to the promised Venn Pie Chart “Applet” and its screenshot:

Some comments for the updated HTML5 Venn Pie Chart at dropbox.com.

Here is a demo of a Venn Pie Chart applet, built with HTML5.

Of course, old browsers that do not support HTML5 will not show anything.

The file is hosted at dropbox.com using the “enable public folder trick” (just click https://www.dropbox.com/enable_public_folder).

The Bayes’ law is very easy to understand when it is explained visually. Venn diagrams are a very popular way to represent relations between sets in the Bayes’ theorem.

Unfortunately, Venn diagrams are inefficient in showing ratios.

The best kind of diagrams to show ratios are the pie charts.

Combining Venn and Pie – by **allowing pie sectors to overlap** – makes diagrams more descriptive and illustrations of Bayes’ theorem – more intuitive.