Bell curve also called as Gaussian distribution or Normal distribution used in performance appraisal is a forced rating or grading system in Performance management systems (PMS). It helps corporates in identifying- High, Average and Poor performer employees. Bell Curve works with the assumption of 10-80-10, meaning 10 % candidates are High-performers, 80% are average and rest 10 % are low performers. It works as a way of rewarding the high performers. Theoretically it is suitable in very large organisations, where top management can visualize trends of their employees performance in Bell shape curve. PMS helps management in estimating planned attrition rate. Management can use the output of Bell curve to identify the employees who needs training or re-training in their respective areas. But many researches have shown that, there could be more high performers in a corporates as oppose to assuming just 10%. It arbitrarily limits the number of employees who can excell....