The asymptotic distributions of the largest entries of sample correlation matrices
Open Access
- 1 May 2004
- journal article
- Published by Institute of Mathematical Statistics in The Annals of Applied Probability
- Vol. 14 (2) , 865-880
- https://doi.org/10.1214/105051604000000143
Abstract
Let Xn=(xij) be an n by p data matrix, where the n rows form a random sample of size n from a certain p-dimensional population distribution. Let Rn=(ρij) be the p×p sample correlation matrix of Xn; that is, the entry ρij is the usual Pearson”s correlation coefficient between the ith column of Xn and jth column of Xn. For contemporary data both n and p are large. When the population is a multivariate normal we study the test that H0: the p variates of the population are uncorrelated. A test statistic is chosen as Ln=max i≠j|ρij|. The asymptotic distribution of Ln is derived by using the Chen–Stein Poisson approximation method. Similar results for the non-Gaussian case are also derived.Keywords
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