Free Software for Ed & Psych Associates

A standalone Windows program that calculates the chi-square statistic for 2x2 to 10x10 contingency tables. Also calculates the contingency coefficient, phi, and kappa statistics. The chi-square test is used to compare the distributions of two independent...

A standalone Windows program that calculates effect sizes (Cohen's d, r, Glass's delta, Hedges' Unbiased d, Common Language Effect Size, mean difference, pooled standard deviation) given appropriate group means and standard...

Estimates the sample size needed for a specified coefficient alpha, given the Type I error rate and the effect...

A standalone Windows program that calculates diagnostic efficiency statistics: sensitivity, specificity, false positive rate, false negative rate, positive and negative predictive power, odds ratio, kappa, likelihood ratio, odds ratio, phi...

Body Mass Index Calculator is an easily calculated index of body fat for adults that uses only height and weight. The formula used in this Calculator is (Weight in Pounds * Height in Inches squared) x 703. The definitional formula is Weight in Kilograms *...

This program calculates three indices of factor pattern invariance: coefficient of congruence (Rc); chi-square goodness of fit; and salient variable similarity index. All three require that the same variables and factoring methods be used in separate...

A standalone Macintosh program to compute the statistical significance of chi-square difference tests as typically used in comparisons of nested SEM models in EQS, LISREL, and Mplus SEM software as per Bryant and Satorra...

A standalone Windows program for evidence-based practice that computes posterior probability when given prior probability and likelihood ratio. Especially useful for evidence-based assessment when trying to determine the probability of a...

Omega is a standalone Windows program to compute omega and omega hierarchical, measures of measurement precision or reliability, using standardized loadings from a bifactor confirmatory factor analysis. A prerequisite to using Omega is a good fitting,...

Calculates diagnostic efficiency statistics: sensitivity, specificity, true and false positive rates, positive predictive power, negative predictive power, odds ratio, kappa, likelihood ratios, diagnostic odds ratio, phi coefficient, conditional...