Psychology & Social Science
Effect size, reliability, survey design & behavioral research tools (12 tools)
Independent T-Test
Compare means of two groups
One-Way ANOVA
Compare means across multiple groups
Correlation Matrix
Pearson correlation between variables
Likert Scale Analyzer
Analyze Likert-type survey responses
Survey Sample Size Calculator
Sample size for surveys
Demographic Rate Calculator
Birth, death & migration rates
Dependency Ratio Calculator
Economic dependency ratio
Standard Score (Z-Score)
Convert raw score to Z-score
Percentile Rank Calculator
Percentile rank from scores
Effect Size (r)
Correlation-based effect size
Fisher's Exact Test
Exact test for small 2×2 tables
Kruskal-Wallis Test
Non-parametric one-way ANOVA