This page calculates the Poisson distribution that most closely fits an observed frequency distribution, as determined by the method of least squares. Users enter observed frequencies, and the page...

This tutorial introduces nonlinear regression and provides a review of linear regression. Topics covered include Introduction to Regression, Nonlinear Regression, Interpreting the Results of...

This article describes a dataset containing information on bacterium culturing. Students can use graphical methods, one-way and two-way ANOVA, and multiple polynomial regression to estimate the...

An important idea in statistics is that the amount of data matters. Often this is taught with formulas --- the standard error of the mean, the t-statistic, etc. --- in which the sample size appears...