Gli indici di asimmetria e di curtosi di K.Pearson per la media campionaria

E. A. Amato
It is known that the distribution of the sample mean tends to a normal distribution as the sample size n increases—under quite general conditions—in case of sampling both with replacement and without replacement. A simple criterion, usually applied, to gauge the approach to such limit distribution, is to examine the behaviour of K.Pearson's asymmetry and kurtosis indexes. First of all we have reformulated Pearson's indexes as ratios between quantities expressed in the same unit measure...