This web site offers free resources for students and researchers working with statistics. All the calculators and tools featured here have been designed with ease of use and clarity of presentation in mind. The web site has three main sections: statistical calculators, which deals mainly with hypothesis testing; p-value calculators, which allow you to derive p-values from Z, t, chi-square and Pearson (r); and descriptive statistics - averages, variance, and easy histogram and bar chart makers. Registration not required.