# Search results

##### Result by tag 5 results

- Count to Probability
This online calculator takes a list of events along with number of times the particular event occured and calculates the probability (and log probability) of each event by dividing event count to the total number of events.

- Mean, variance and standard deviation of discrete random variable
This online calculator calculates mean, variance and standard deviation of random variable entered in the form of value-probability table

- Probability Urn simulator
This calculator simulates urn or box with colored balls often used for probability problems and can calculate probabilities of different events.

- Text fitness (version 3)
This online calculator calculates measure known as fitness score, of how given text is similar to a typical English text. It uses logarithms of probabilites with normalization to calculate fitness score. The reference frequencies are calculated from Leipzig Corpora Collection and can be downloaded from http://practicalcryptography.com/cryptanalysis/text-characterisation/quadgrams/. The less value you get, the better.

- Bayes’ theorem
This online calculator calculates posterior probabilities according to Bayes’ theorem.