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Statcato:
Free Software for Elementary Statistics

Description

Statcato is a free Java software application developed for elementary statistical computations. Its features are tailored for community college statistics students and instructors.

To Use Statcato

Statcato requires Java Runtime Environment (JRE) 1.6 or higher. To download the latest version of Java, visit http://www.java.com/en/download/index.jsp.

Follow this link to start using Statcato: Launch Statcato (Java web start).

Details on how to obtain Statcato is available here.

Versions and Updates

The current version is 0.9.12.

The first beta version (0.9.1) is made available in February 2009.

See all versions and updates.

Features

Statcato has two main windows: Log, where outputs of computations are displayed; and Datasheet, which contains sheets of data values that can be edited and manipulated using various utilities provided.

Basic data operations include:

• Sort, rank, standardize data
• Generate patterned data (simple number sequence and arbitrary data sequence)
• Generate random samples (e.g.binomial, uniform, integer, normal distributions)

Probability calculations (probability density, cumulative probability, inverse cumulative probability) are supported for the following distributions:

• Continuous: Normal, Student's t, Chi-square, F, uniform
• Discrete: Binomial, geometric, integer, Poisson

The following statistical computations are supported:

• Descriptive statistics (e.g. mean, sum, standard deviation, coefficient of variation, quartiles, skewness, kurtosis, etc.)
• Normality test (Ryan-Joiner)
• Sample size determination for mean and proportion
• Confidence intervals for one- and two-population mean, proportion, and variance
• Hypothesis Tests for one- and two-population mean, proportion, and variance
• Correlation and regression (two-variable linear and non-linear regression, multiple linear regression)
• Multinomial experiments (Chi-square goodness-of-fit, contingency table, cross tabulation)
• Analysis of variance (one-way and two-way ANOVA)
• Nonparametrics (sign test, Wilcoxon signed rank and rank sum test, Kruskal-Wallis, rank correlation, runs test)

Statcato also provides a calculator and utilities for creating graphs, including bar chart, box plot, dot plot, histogram, normal quantile plot, pie chart, scatterplot, and stem plot.

License

Statcato is currently licensed under GNU General Public License (GPL). The complete source code is available on the download page.

This software incorporates JFreeChart and JFreeReport, (C)opyright 2000-2009 by Object Refinery Limited and Contributors. JFreeChart and JFreeReport are licensed under LGPL. This software also incorporates JAMA, the Java Matrix Package developed by the National Institute of Standards and Technology.