Format for Bell Curve (appraisal/increment)

Hi All

The Chart is very useful. Concerning the theory aspect, A bell curve helps us to consolidate the performance evalation findings when seen from an organisational perspective. It brings out the ratio of the worst performers, the satisfactory performers and the top performers in an organisation.



For a more critical study of the effectiveness of Bell-Curve analysis, pls see the link

For Whom the Bell Curve Tolls - The Controversial Practice of Forced Ranking - HBS Working Knowledge from the Harward Business School website.

Regards

Mahesh T Nair

Nice one, great work

Regards,

Sunil

it would be great help if you can provide complete analysis of this.....

I am unable to open ur attachment. I request u to send the same on my mail address- .

Thanx & regards.

V.K.Gupta

Hey very useful one.....thnx for the same..

Regards

Really a good one...thnx for sharing the same.

Regards

Hi Smriti !

Please check with the person who had given you this excel sheet. This is a classic example of misunderstaning the concepts and using them erroneously. What you call bell curve is actually "Normal Probability Curve" (since it is bell shape it is called bell curve).

Normal Probability Curve (NPC) is an ideal distribution plot of any measurable chararacteristic that is supposed to be normally distributed in the larger population. For example; if you measure height of all people in the world, the distribution of the height will be close to the NPC (but it will never be exactly like that).

This is misuse of NPC to project it as ideal in small samples that are conceptaully "not normally distributed" e.g. if you plot the IQ of IITians it would never be similar to NPC as IITians are supposed to (are actully are) be on the higher side.

This is a misconception that general big NPC is composed of sevel small NPCs. The graph here is a complele misrepresentation of the applicability of the concept.

Regards,

Vijai Pandey

Central Test: Leader in online psychometric testing

Hi

Smriti seen your bell curve xls but could not opened it well keep putting knowledgable inputs for HR Professionals, if i can help you in any ways let me know.

Poonam

Hi All,

There is already a thread in the forum discussing on the merits/demerits of using a bell curve on performance evaluation data:

Bell curve appraisal system

In order to arrive at a balanced view of using bell curves, I think the following article would help:

Bell Curve Method of Performance Appraisal

Largely, professionals tend to agree that a bell curve analysis is not by itself a performance evaluation tool, but if the analysis is done on the performance data department wise, it helps the management to compare the ratio of the worst performers and good performers within the department against an ideal standard. Moreover, Managements can tweak the ideal bell curve so that the performance standards are not too stiff and remains realistic.

I understand that some companies have got into legal entanglements by merely firing the worst performers rather than initiating efforts to rehabilitate them or provide training to them. This has brought a bad name to the forced ranking system.

Regards

Mahesh T Nair