Many companies "grade on a bell curve" to compare the performance of their manager and professional workers. This forces the use of some low performance ratings, so that not all workers are listed as "above average".
Company A's "performance management process" for a time assigned 10% A grades, 80% B grades and 10% C grades to the company's 18,000 managers.
Suppose that Company A scores really are normally distributed. This year, managers with scores less than 25 received C's and those with scores above 475 received A's.
What are the mean and standard deviation of the scores?
Company A's "performance management process" for a time assigned 10% A grades, 80% B grades and 10% C grades to the company's 18,000 managers.
Suppose that Company A scores really are normally distributed. This year, managers with scores less than 25 received C's and those with scores above 475 received A's.
What are the mean and standard deviation of the scores?