The aim of this paper is to introduce a normalized index for measuring the variability of statistical rates. We define a suitable absolute index of variability and then we must determine both its minimum and maximum values for applying a normalization procedure to it, obtaining the corresponding normalized one. The statistical distribution with minimum or maximum variability has been discussed widely in the literature for statistical distributions of a non-negative variable. However, these solutions can not be applied without modifications to rates, above all if rates take only values comprised between 0 and 1. We determine analytically the minimum and maximum values of the proposed absolute index and implement an algorithm in R language for calculating the normalized one .
A variability index for spatial series of rates / Sebastiani, Maria Rita. - STAMPA. - (2006), pp. 363-366. (Intervento presentato al convegno XLIII Riunione Scientifica della Società Italiana di Statistica tenutosi a Torino nel 14-16 giugno 2006).
A variability index for spatial series of rates
SEBASTIANI, Maria Rita
2006
Abstract
The aim of this paper is to introduce a normalized index for measuring the variability of statistical rates. We define a suitable absolute index of variability and then we must determine both its minimum and maximum values for applying a normalization procedure to it, obtaining the corresponding normalized one. The statistical distribution with minimum or maximum variability has been discussed widely in the literature for statistical distributions of a non-negative variable. However, these solutions can not be applied without modifications to rates, above all if rates take only values comprised between 0 and 1. We determine analytically the minimum and maximum values of the proposed absolute index and implement an algorithm in R language for calculating the normalized one .I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
