Reliability (interrater reliability)

Correct Answer: Cohen’s Kappa

The correct answer is Cohen’s Kappa because it is specifically designed to evaluate interrater reliability in performance assessments. Cronbach’s Alpha measures internal consistency reliability, Pearson’s Correlation assesses the linear relationship between two continuous variables, and Factor Analysis is used for data reduction and identifying underlying factors. These measures are not suited for assessing agreement between raters.

Correct Answer: Providing standardized training for all supervisors to ensure consistent application of evaluation criteria.

Providing standardized training for all supervisors ensures that evaluation criteria are applied consistently across different raters, thereby enhancing interrater reliability. This approach minimizes subjective differences and aligns supervisors' understanding of performance standards. Introducing a broader range of performance metrics might add complexity without addressing consistency, allowing supervisors to interpret criteria based on individual team dynamics can increase variability, and while regular review sessions are beneficial, standardized training is more directly effective in ensuring uniform application of evaluation standards.

Correct Answer: Cohen's Kappa

Cohen's Kappa is the appropriate statistical measure used to assess interrater reliability for categorical data in employee evaluations. Other options are unsuitable because Pearson's Correlation Coefficient is used for continuous variables, Cronbach's Alpha measures internal consistency, and Intraclass Correlation Coefficient is typically used for continuous data.