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STATISTICA & APPLICAZIONI - 2020 - 2 newdigital
format: Digital issue
Year: 2020
Secondo fascicolo del 2020
Editorial newdigital
format: Article | STATISTICA & APPLICAZIONI - 2020 - 2
Year: 2020
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Annual content newdigital
format: Article | STATISTICA & APPLICAZIONI - 2020 - 2
Year: 2020
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On evaluation of sample size to test hypothesis on Benford’s distribution newdigital
format: Article | STATISTICA & APPLICAZIONI - 2020 - 2
Year: 2020
Benford’s distribution,also known as first-digit law, is used to detect several kinds of frauds on the basis of data. Several statistical tests are used to verify that real-life sources of data have Benford’s distribution. In this paper we consider in detail the well-known chi-square test and the Kolmogorov test of goodness of fit...
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Robust estimation in joint modelling for human intelligence newdigital
format: Article | STATISTICA & APPLICAZIONI - 2020 - 2
Year: 2020
Joint models under generalized linear mixed model framework have received lot of attention among researchers in the field of psychology to analyse data with more than one response variable. The presence of aberrant observations in the data may influence the estimation of parameters in the existing method of estimation such as maximum likelihood, quasi-likelihood...
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Forecasting macroeconomic volatility with score-driven models newdigital
format: Article | STATISTICA & APPLICAZIONI - 2020 - 2
Year: 2020
Business cycle volatility has been extensively studied by means of the well-known ARCH and GARCH processes. Aim of this paper is to show that the score-driven models are instead more accurate in predicting business cycle volatility than the GARCH-type models...
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Clustering countries according to the world happiness report newdigital
format: Article | STATISTICA & APPLICAZIONI - 2020 - 2
Year: 2020
The World Happiness Report (WHR) has drawn international attention since the first initiative in 2012 as it can help the policy makers to evaluate their policy options. There are six factors to describe the variation of the happiness across the countries, i.e., gross domestic product per capita, social support, healthy life expectancy, freedom to make life choices, perception of corruption, and generosity...
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Generalized Alpha Skew Normal Distribution newdigital
format: Article | STATISTICA & APPLICAZIONI - 2020 - 2
Year: 2020
This paper extends the work of Elal-Olivero (2010) on the alpha-skew normal distribution. The extension is a multivariate version of Elal-Olivero’s univariate case. Then we study the statistical properties of the new extension such as marginal and conditional distribution, closure under convolution with normal random variate. Furthermore, we illustrate the performance of the distribution using simulated data obtained from the generalized distribution via the Metropolis-Hasting algorithm...
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STATISTICA & APPLICAZIONI - 2020 - 1 digital
format: Digital issue
Year: 2020
Primo fascicolo del 2020
Editorial digital
format: Article | STATISTICA & APPLICAZIONI - 2020 - 1
Year: 2020
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Editorial of the special issue on distribution and inequality measure in economics digital
format: Article | STATISTICA & APPLICAZIONI - 2020 - 1
Year: 2020
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Flexible bivariate generalized Pareto models digital
format: Article | STATISTICA & APPLICAZIONI - 2020 - 1
Year: 2020
The hierarchy of Pareto models, described in a paper written by Arnold in 2015, admit representations in terms of independent gamma variables. Utilizing general bivariate beta(2) models introduced in a paper written by Arnold and Ng in 2011, which also involve independent gamma components, it is possible to identify flexible bivariate generalized Pareto models which can exhibit a wide range of correlation values...
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