Steekproeven uit de halve cauchy verdeling

J. L. Mijnheer

Statistica Neerlandica, 1968, vol. 22, issue 2, 97-101

Abstract: Summary Let x1…, xn be a sample from a distribution with infinite expectation, then for n→∞ the sample average x̄n tends to +∞ with probability 1 (see [4]). Sometimes x̄n contains high jumps due to large observations. In this paper we consider samples from the “absolute Cauchy” distribution. In practice, on may consider the logarithm of the observations as a sample from a normal distribution. So we found in our simulation. After rejecting the log‐normality assumption, one will be tempted to regard the extreme observations as outliers. It is shown that the discarding of the outlying observations gives an underestimation of the expectation, variance and 99 percentile of the actual distribution.

Date: 1968
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