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Bell curve performance appraisal pdf5/31/2023 ![]() In the area of performance management, this curve results in what we call "rank and yank." We force the compan y to distribute raises and performance ratings by this curve (which essentially assumes that real performance is distributed this way). So if your "average sales per employee" was $1M per year, you could plot your sales force and it would spread out like the blue curve above. ![]() As you can see from the curve, in the area of people management the model essentially says that "we will have a small number o f very high performers and an equi valent number of very low performers" with the bulk o f our people clustered near the average. This model assumes we have an equivalent number of people above and below average, and that there will be a very small number of people two standard deviations above and below the average (mean). ![]() The Bell Curve represents what statisticians call a "normal distribution." A normal distribution is a sample with an arithmetic average and an equal distribution above and below average like the curve below. Let's look at the characteristics of the Bell Curve, and I think you'll quickly understand why the model doesn't fit.
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