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Alternative Reliability Indexes
Basic Statistics Calculator
Learning by Doing Stats (t-test Tutorial)
Comparing Two Independent Samples
Comparing Paired Samples
Power Analysis for t-tests
Effect Size Calculator 1 (Means, SDs, Ns)
ANOVA
ANCOVA for Pre-posttest Design
Non-parametric Tests
Correlation
Regression Analysis
Relative Importance Analysis
Chi-square Test
McNemar's Test and Cochran's Q Test
Cohen's Kappa and Other Interrater Agreement Measures
Cluster Analysis
Exploratory Factor Analysis
Principal Component Analysis
Correspondence Analysis
Tree-based Models
Structural Equation Modeling (SEM)
Binary (1-0) Data Converter
Screening Data
Classical Test Theory (Item Analysis)
Criterion-referenced Testing (Item Analysis)
Generalizability Theory
Rasch Model (1PL IRT)
Item Response Theory
Meta-analysis
Text Analysis