Convex hull trimming, Advanced Statistics

Convex hull trimming: A procedure which can be applied to the set of bivariate data to permit robust estimation of the Pearson's product moment correlation coef?cient. The points de?ning convex hull of the observations, are removed before the correlation coef?cient is calculated. The main attraction of this method or technique is that it eliminates the isolated outliers without disturbing the general shape of bivariate distribution.

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