On Agreement Indices for Nominal Data

摘要: In empirical research certain measurements are frequently performed. Measurement is the assigning of numbers to subjects denote a property. These take place at level measurement: nominal, ordinal, interval or higher. Especially in social sciences, assignment category very often based on judgement an expert and not objective clear criterium. Still it desirable that ‘scientists agree’, i.e. will scarcely differ if another rater had performed task. So importance there agreement among raters. There when raters assign entity same category. Agreement only investigated within but general also fields biology medicine.