- Determination of the number of groups in histogram generation
Sturges formula and other methods of determining the number of groups in histogram generation

- Histogram
Histogram generation according to input data. The number of groups is determined by the Sturgess formula, other formulas or set manually

- Normal distribution
Plots the CDF and PDF graphs for normal distribution with given mean and variance.

Binomial distribution, probability-density function calculation

- Pearson correlation coefficient
The calculation of the correlation coefficient of two random variables

- Probability of given number success events in several Bernoulli trials
Gives probability of k success outcomes in n Bernoulli trials with given success event probability.

- Student t-distribution
Calculates cumulative distribution function value and probability density function value for Student t-distribution. Quantile calculator evaluates Student quantiles for given probability and specified number of degrees of freedom.

- Symbol frequencies table
This online calculator builds symbol frequency table for a given message

- Wordpress plugin
With Planetcalc plugin for Wordpress you can easily insert any planetcalc calculator in your wordpress-based site or blog pages.