Category Archives: Probability & Statistics

More Bayes’ magic

By Siddhartha Reddy | May 4, 2008

Statistics can be quite bewildering. Consider the following problem:
It is given that if a person having a disease takes a diagnostic test for the disease, the test returns a positive result 99% of the time, or with a probability of 0.99. Now, for some person picked at random, if the test returns a positive result, [...]

Posted in Probability & Statistics | Tagged | 3 Comments

Probabilities, huh!

By Siddhartha Reddy | May 3, 2008

sanket asked a very interesting question in the comments to my previous post on Monty Hall Problem:
Assume that boys and girls are equally likely to be born. Let us say that a family has two children. Given that one of them is a boy, what is the probability that the other one is a boy [...]

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To switch or not to switch, that is the question

By Siddhartha Reddy | April 21, 2008

I recently came across a very interesting problem known as “The Monty Hall Problem.” This is a statistical puzzle named after the host of an old television show “Let’s Make a Deal” which featured a similar problem albeit a little more involved than the basic version that mathematicians use. Here is a simple description of [...]

Posted in Probability & Statistics | Tagged , , | 3 Comments

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