🔬research
Reliability & Validity Checker
Ensure your research instruments meet rigorous psychometric standards with this advanced reliability and validity analysis tool. Whether you're developing surveys, validating scales, or analyzing test data, this tool provides comprehensive metrics including Cronbach's Alpha, Split-Half reliability, Test-Retest correlations, and Inter-Rater reliability (ICC). Perfect for researchers, psychologists, educators, and data scientists who need to validate measurement instruments and ensure data quality. Features interactive visualizations, detailed interpretations, and export capabilities for publication-ready results.
Key Features
- Cronbach's Alpha calculation with 95% confidence intervals for internal consistency
- Split-Half reliability using Spearman-Brown correction formula
- Test-Retest reliability analysis for temporal stability assessment
- Inter-Rater reliability (ICC) for multiple rater agreement analysis
- Content Validity Index (CVI) and Content Validity Ratio (CVR) calculations
- Construct validity assessment with convergent and discriminant validity metrics
- Criterion validity analysis with concurrent and predictive validity measures
- Comprehensive data quality analysis with completeness and consistency scoring
- Statistical power analysis and sample size recommendations
- Interactive visualizations including bar charts and radar plots
- Automated interpretation with professional recommendations
- Support for scale/survey, test-retest, and inter-rater data formats
- CSV and JSON data import with example data generation
- Export results in JSON format for further analysis
- Built-in interpretation guidelines based on established psychometric standards
- Outlier detection using z-score methodology
- Standard error and confidence interval calculations
Share This Tool
This tool is 100% free and requires no login
Loading tool...
This may take a few seconds