It took Francis Galton several years to figure out that correlation and regression are not two concepts – they are different perspectives on the same concept. The general rule is straightforward but has surprising consequences: whenever the correlation between two scores is imperfect, there will be regression to the mean.
Daniel KahnemanRelated topics
concept correlation different general imperfect mean regression rule surprising take yearsRelated quotes
The Wild Hunt is known in all Celtic countries; it is a huntsman with a pack of hounds who is seen or heard to rush through the country. Those who see him are doomed to die. The writer heard the Wild Hunt quite distinctly one night in Wales several years ago, but has not suffered any ill effects from it as yet.
Robertson Davies
The first step in the direction of a world rule of law is the recognition that peace no longer is an unobtainable ideal but a necessary condition of continued human existence. But to take even this step we must return to a calm and responsible frame of mind in which we can face the long patient tasks ahead.
Margaret Mead
We had principles in mathematics that were granted to be absolute in mathematics for over 800 years, but new science has gotten rid of those absolutism, gotten forward other different logics of looking at mathematics, and sort of turned the way we look at it as a science altogether after 800 years.
Mahmoud Ahmadinejad
For too long, many nations, including my own, tolerated, even excused, oppression in the Middle East in the name of stability. Oppression became common, but stability never arrived. We must take a different approach. We must help the reformers of the Middle East as they work for freedom, and strive to build a community of peaceful, democratic nations.
George W. Bush