# Conditional Probability and Independent Events

This applet shows a discrete sample space as a rectangle with a grid of $N_x$ by $N_y$ dots. The underlying probability space is the uniform distribution on this finite set of points. Two events $A$ and $B$ are shown as smaller rectangles. The events $A$ and $B$ can be moved by dragging the interiors, and the sizes of the events (proportional to the probabilities) can be changed by dragging the corners. The probabilities $P(A)$, $P(B)$, $(P(A)$ intersect $B$), $P(A | B)$, and $P(B | A)$ are shown. The grid sizes $N_x$ and $N_y$ can be changed with text boxes.
Identifier:
http://www.cut-the-knot.org/Curriculum/Probability/ConditionalProbability.shtml
Rating:
Creator(s):
Alexander Bogomolny
Cataloger:
Kyle Siegrist
Publisher:
Cut-the-knot
Rights:
Copyright Alexander Bogomolny. Evidently, the applet can freely used on the URL above, or can be purchased for \$5 for use in a teacher's web page