What is a bell curve?
Posted in QnA Arena on Oct 7, 2009 at 14:06 IST (10 months ago). Subscribe to this post
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anishkRank: 149
Have u heard of that term before? i was reading an article & i got stuck with it. can u temme wat it meanz? does it have any connection with computerz?
Posted by anishk on Wednesday, October 7, 2009, 2:06 pm
sathish1...Rank: 30
I am not good in mathematics :) hence kindly refer the wikipedia link
http://en.wikipedia.org/wiki/Normal_distribution
But by any chance if you are refering to the book "Bell Curve", then here you go.
http://en.wikipedia.org/wiki/The_Bell_Curve
http://en.wikipedia.org/wiki/Normal_distribution
But by any chance if you are refering to the book "Bell Curve", then here you go.
http://en.wikipedia.org/wiki/The_Bell_Curve
Posted by sathish1411 on Wednesday, October 7, 2009, 3:07 pm
cerulean...Rank: 3
I know that's its something these corporates use to normalize (read average and kill) the appraisal of an employee. :)
Posted by ceruleancode on Wednesday, October 7, 2009, 4:51 pm
asighRank: 2
We use it a lot in Six Sigma Methodology. To see the variation in a process. The tighter the Bell curve the less variation you have.
Thankful users: anishk
Posted by asigh on Wednesday, October 7, 2009, 9:12 pm
robinalexRank: 1
A bell curve is a graphical repetition of normal distribution for a given set of data.
This is used for data analysis, and the data can be anything (like business, statistical, etc..)
This is not directly related to computers, but implemented in computers to automate data analysis.
This is used for data analysis, and the data can be anything (like business, statistical, etc..)
This is not directly related to computers, but implemented in computers to automate data analysis.
Thankful users: anishk
Posted by robinalex on Wednesday, October 7, 2009, 9:27 pm
asighRank: 2
I guess the only connection it would have with a computer:
A computer can be used to compute a Bell Curve...but so can a pen and paper.
It shows the variation from the normal. Picture a bell. It is roughly shaped like a triangle. The wider the triangle angles are from the middle (the normal), the less evenly distributed your data is .. which indicates you have variation. And variation is the biggest delta a 'process' can have. And 6 sigma methodology can be used to lessen the variation, and optimize the process.
It can typically be used for a manufacturing process:
Metal sheets are made which should be 0.55mm thick. The unit is manufacturing them 0.53mm and 0.56mm thick. These two would be the variation from the normal. Clearly manufacturing defects. We can safely assume if there is variation in a process it is because of something going wrong. Needs to be corrected.
A computer can be used to compute a Bell Curve...but so can a pen and paper.
It shows the variation from the normal. Picture a bell. It is roughly shaped like a triangle. The wider the triangle angles are from the middle (the normal), the less evenly distributed your data is .. which indicates you have variation. And variation is the biggest delta a 'process' can have. And 6 sigma methodology can be used to lessen the variation, and optimize the process.
It can typically be used for a manufacturing process:
Metal sheets are made which should be 0.55mm thick. The unit is manufacturing them 0.53mm and 0.56mm thick. These two would be the variation from the normal. Clearly manufacturing defects. We can safely assume if there is variation in a process it is because of something going wrong. Needs to be corrected.
Posted by asigh on Friday, October 9, 2009, 1:29 am
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