Talk:Wald-Wolfowitz runs test

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[edit] K-S-Test more powerful?

As far as I understand, this statement in the article is wrong because the W-W test and the K-S-test apply to completely different kinds of statistics. While the W-W test applies to sequences the K-S test is used to analyse the cumulative distribution of some quantity (e.g. mass distribution in a star cluster) where the order does not matter (e.g. whether count brown dwarfs first or in random order). Furthermore, the K-S test does not make much sense for binary distributions like throwing coins, because it normally requires all events to be related to a different value (e.g. no two stars have exactly the same mass) and coin-throwing results in only two different "values". In other words, the K-S test is not more powerful then the W-W test, just as a thermometer isn't more powerful than a ruler.--SiriusB 15:15, 19 September 2007 (UTC)