Krippendorff's Alpha

Krippendorff's Alpha is a statistical measure used to assess how consistently different observers or code systems categorize or interpret the same data. It quantifies the degree of agreement beyond what would be expected by chance, with values ranging from 0 (no agreement) to 1 (perfect agreement). A higher alpha indicates more reliable, reproducible coding, making it useful for evaluating the quality of data collected through qualitative research, content analysis, or coding schemes. This measure helps researchers ensure that their findings are not significantly influenced by individual biases or inconsistencies among raters.