The asymptotic distribution of marginal sample kurtoses is derived. The distribution is used to derive new estimators of the kurtosis parameter ? of a p-variate elliptical distribution as well as tests for homogeneity of kurtosis.

The conversion problem on the metric scale of the judgments expressed towards the products or the services can be solved searching the latent variable, that is always the normal standard. Sometimes, particularly when the frequencies are concentrated on the left extreme or the right extreme of...