Shodor Education Foundation
Shodor Interactivate: Advanced Monty Hall
Choose one of N doors to experimentally determine the odds of winning the grand prize behind one of the doors, as in the TV program "Let's Make a Deal."
Shodor Education Foundation
Shodor Interactivate: Two Colors Applet
Choose one of three boxes and choose one ball from the box to look at conditional probabilities.
Khan Academy
Khan Academy: Adding Probabilities
Find four probabilities for each problem: P(A), P(B), P(A and B), and P(A or B).
Khan Academy
Khan Academy: Dependent Probability
Find dependent probabilities like P(A | B) or P(B | A) for a variety of contexts.
CK-12 Foundation
Ck 12: Interactive Geometry: 11.3 Conditional Probability
Learn how to calculate the conditional probabilities of events based on information in a table.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math; Introduction to Probability
A good introduction to concepts in probability, this page also gives a great definition of sample space. Scroll down halfway to find sample space.
Richland Community College
Richland Community College: Probability Definitions
This site, which is provided for by the Richland Community College, gives a list of probability definitions.
Richland Community College
Richland Community: Introduction to Applied Statistics
This site from the Richland Community College provides lecuture notes from a class neatly organized and easy to read. Has some good information.
National Council of Teachers of Mathematics
The Math Forum: Odds and Probability
Odds and probability are related, but not the same thing. This question and answer site clears up the difference between the two.
Shodor Education Foundation
Shodor Interactivate: Dictionary: Conditional Probability
This interactive dictionary gives the definition of conditional probability with a link to a discussion regarding this topic.
Other
Mathematics Tutorials: Probability
This site does a basic overview of Probability and provides some sample problems.
Better Lesson
Better Lesson: Hs Statistics & Probability: Using Probability to Make Decisions
Learn about probability concepts with fun learning games including Algebra II Jeopardy, Deal or No Deal, Decisions Decisions, Show Time, Playin' against All Odds, and more.
Interactive Mathematics
Interactive Mathematics: Conditional Probability
In this tutorial, conditional probability is presented with a definition and examples.