Exact, limiting distributions along with their rates of convergence of exceedance statistics for both order statistics and record statistics are provided when the underlying distribution may have points of discontinuity. Furthermore the exact distribution of record statistics for arbitrary...

In this paper, we consider the visualization and statistical modeling of financial data (e.g., sales, assets) for many global firms which are listed and delisted. This study presents an exploratory data analysis carried out in the R programming language. The results show that a log-linear model...

One of the key challenges implied by the upcoming regulatory framework for minimum market risk capital requirements, known as FRTB (Fundamental Review of Trading Book), is the PL attribution (PLA) tests. PLA tests constitute a game-changer in the way risk engine and models are assessed for...

The aim of this paper is comparison of multivariate statistical analysis and machine learning methods based on the model used for the measurement of current and forecasting of the future customer profitability. Modern customer profitability analysis shows that customer-company relationship is...

The standard statistical framework for evaluating investment risk and performance breaks down in the presence of modern quantitative investment strategies. In this paper, we illustrate the problematic nature of applying a 95% confidence level to algorithmic trading models. We introduce an...

This report deals with the analysis of data used by tax officers to support their claim of tax fraud at a pizzeria. The possibilities of embezzlement under study are overreporting of take-away sales and underreporting of cash payments. Several modelling approaches are explored, ranging from...

In this article, the reliability of first (flash) quarterly national account data estimates compiled and released by the National Statistical Service of Greece is examined. The more reliable the first estimates, the better equipped are policy-makers to assess the economic situation and outlook....

What is Statistics? Opinions vary. In fact, there is a continuous spectrum of attitudes toward statistics ranging from pure theoreticians, proving asymptotic efficiency and searching for most powerful tests, to wild practitioners, blindly reporting p-values and claiming statistical significance...

Public-private partnerships (PPPs) have increased rapidly in emerging and developing countries, creating both opportunities and fiscal challenges. One of the main challenges is that while governments have increased commitments in guarantees and direct subsidies to promote PPPs, contractual...

Digitalization encompasses a wide range of new applications of information technology in business models and products that are transforming the economy and social interactions. Digitalization is both an enabler and a disruptor of businesses. The lack of a generally agreed definition of the...