Statistical Calculators

Statistical Calculators using keyboard screen input

SISA does comparisons of means, proportions, and correlations. It generates random numbers and probability distributions. This is a versatile and easy to use calculator. http://home.clara.net/sisa/index.htm
VassarStats calculators for converting Chi-Square, F, r, t, and z-values into p-values http://faculty.vassar.edu/lowry/VassarStats.html
This page contains many statistical calculators for univariate and multivariate methods with a good proportion devoted to probability distributions. Despite this, you may find some valuable procedures here. http://www.danielsoper.com/statcalc/
Calculates every known statistic from a 2x2 table. Easy to use. http://statpages.org/ctab2x2.html
GraphPad QuickCalcs online calculators for scientists. The user chooses the type of data to be analyzed (categorical, continuous, statistical distributions, etc) and the statistical test to be performed. http://www.graphpad.com/quickcalcs/index.cfm
Neat calculator that tests for the equality of 2 or more correlations coefficients. Requires only the value of r and the sample size for each sample. It can't get any easier than this. http://home.ubalt.edu/ntsbarsh/Business-stat/ otherapplets/MultiCorr.htm

Easy to use linear regression program with graphical capabilities. http://bayes.math.montana.edu/cgi-bin/Rweb/ buildModules.cgi
Very easy to use logistic regression program. It accepts copied and pasted data only. http://statpages.org/logistic.html
Very easy to use Cox regression analysis program. Accepts copied and pasted data only. http://statpages.org/prophaz2.html