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Pastimes : MANIPULATION IS RAMPANT --- Can We Stop It? -- Ignore unavailable to you. Want to Upgrade?

To: Hoatzin who wrote (106)	5/12/2002 12:39:57 PM
From: LPS5	Respond to of 589

LOL! Mine too - they fall under EVT (extreme value theory) returns ;-) LP.

To: Hoatzin who wrote (106)	5/12/2002 1:03:08 PM
From: HairBall	Respond to of 589

STOCKS, HORSES, CHAOS AND EFFICIENT MARKETS Donagh Lynch Junior Sophister For a brief explanation of leptokurtotic look in the Strong Form section of this finding. maths.tcd.ie Regards, LG

To: Hoatzin who wrote (106)	5/12/2002 1:18:49 PM
From: HairBall	Respond to of 589

A little more info... The mean and variance are known as the first and second “moments” of a distribution. Data that are not normally distributed also have higher moments; the most important are skew and kurtosis. ² The skew is a measure of how asymmetric the data are, with most of the observations piled up at one end and a few extreme observations at the other. If the long tail extends out to the right, the data are called right or positively skewed, and the opposite for tails to the left. ² The kurtosis measures the extent that the data are concentrated in the center and tails, as opposed to intermediate distances from the mean. Data with positive kurtosis have lots of points near the mean and long tails of extreme values; this is known as a leptokurtotic distribution. Data with negative kurtosis have points spread relatively evenly along an interval around the mean, and abrupt upper and lower bounds; this is known as a platykurtotic distribution. bren.ucsb.edu