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K-alphak-alpha.org · Low evidenceK-Alpha Calculator is a free, user-friendly online tool that computes Krippendorff's Alpha inter-rater reliability for nominal, ordinal, interval, or ratio data. It runs entirely client-side in the browser with no data storage or collection, and its open-source code is available on GitHub, with a standalone Windows executable for offline use. The calculator is validated in a peer-reviewed article and ships with Usage Notes and Methodological Notes, plus sample data to help prepare CSV inputs.
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