The paper presents a modification of the matching and difference-in-differences approach of Heckman et al. (1998) for the staggered treatment adoption design and a Stata tool that implements the approach. This flexible conditional difference-in-differences approach is particularly useful for...

Data envelopment analysis (DEA) has proven to be a useful tool for assessing efficiency or productivity of organizations, which is of vital practical importance in managerial decision making. DEA provides a significant amount of information from which analysts and managers derive insights and...

We introduce simple cost and risk proxy metrics that can be attached to Treasury issuance strategy to complement analysis of the resulting portfolio weighted-average maturity (WAM). These metrics are based on mapping issuance fractions to their long-term, asymptotic portfolio implications for...

The handbook sets forth standards of cartographic presentation of statistical data, thus responding to the growing demand for information shown in the territorial and spatial contexts. This demand necessitates constant enhancement of the forms of statistical presentation of data - not only as...

When considering multiple hypothesis tests simultaneously, standard statistical techniques will lead to over-rejection of null hypotheses unless the multiplicity of the testing framework is explicitly considered. In this paper we discuss the Romano-Wolf multiple hypothesis correction, and...

Big Data analytics tries to explore hidden information from huge amount of data in order to make informed decisions. Trying to decipher the true meaning from the streams of data generated is a cumbersome task. Visualization techniques help in gaining a complete view of the trends and patterns of...

We propose the visual attention hypothesis, that visuals in firm earnings announcements increase attention to the earnings news. We find that visuals in firm Twitter earnings announcements are associated with more retweets, consistent with greater follower engagement with announcements with...

We propose a user-friendly graphical tool, the half-disk density strip (HDDS), for visualizing and comparing probability density functions. The HDDS exploits color shading for representing a distribution in an intuitive way.In univariate settings, the half-disk density strip allows to...

Information technology (IT) professionals play an important role in firms' IT investments, technology formation, development, and innovation, contributing to economic growth in the U.S. The use of temporary work visas and related immigration policies that import foreign IT professionals has...

Combining some examples with the recognized purpose of both data visualization and business intelligence the paper tries to emphasize: advantages, lacks, limits, actualities, and potential trends in this field. Most of the figures are the result of practical tests, except the last one which is a...