Regression

For all those out there hating stats esp. the part on regression and correlation, here's the story behind them:

The phenomenon of Regression to the mean was something founded by Sir Francis Galton.

He discovered that the sons of tall fathers tend to be shorter than their fathers. Likewise, the sons of short fathers turn out to be taller than their fathers.

It seem as though there are some mysterious forces that cause human heights to move away from the extreme and towards the average height of humans.

This phenomenon must be true because suppose that this regression to the mean does not occur. That will mean that on average, the sons of tall fathers will be as tall as their fathers. Hence, some sons will have to be taller than their fathers to average out the ones who are shorters. This would go on generations after generations and likewise for the short fathers and sons. After several generations, you will notice that the human race will consist of ever taller people at one end and ever shorter people at the other.

This does not happen. The human height tends to remain stable on average.

And so, I can conclude that Regression to the mean is a phenomenon that maintains stablility.

Interesting hor? =)

Anyway, weekend passed and I realised how laggy I am in terms of school work. I betta buck up!

Joy, stop tinking of him la.. tink more of me, like u always do...

Xin: Stay cheery! Not heard from u for ages!

Jonny: Look to God and he will clear ur disillusions!

Bobz: BUCK UP!


The Bobz
As Always