As population aging sets in, publicly managed pension systems operating on the basis of pay-as-you-go (PAYG) schemes face difficulties in maintaining contribution/replacement rate-retirement age configurations. The changing age composition of societies during demographic transition gradually...

Publicly managed pension systems operating on the basis of pay-as-you-go (PAYG) schemes face financial difficulties worldwide. The expenditure-revenue balances of such a system are determined jointly by the selected configuration of system parameters, and interrelated developments in the labour...

Workers'' remittances are often argued to have a tendency to move countercyclically with the GDP in recipient countries since migrant workers are expected to remit more during down cycles of economic activity back home. Yet, how much to remit is a complex decision involving other factors, and...

Dummy variables can be used to detect, validate and measure the impact of outliers in data. This paper uses a model to evaluate the effectiveness of dummy variables in detecting outliers. While generally confirming some findings in the literature, the model refutes the presumption that the...

Dummy variables can be used to detect, validate and measure the impact of outliers in data. This paper uses a model to evaluate the effectiveness of dummy variables in detecting outliers. While generally confirming some findings in the literature, the model refutes the presumption that the...

In the current literature, in order to be able to detect a single observation as an outlier observation, this observation is represented by a dummy variable and the dummy variable is checked for statistical significance. For an observation to be an outlier observation, the thesis of significant...

The large majority of the criteria for model selection are functions of the usual variance estimate for a regression model. The validity of the usual variance estimate depends on some assumptions, most critically the validity of the model being estimated. This is often violated in model...