Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New ...

Michael Crowley is senior foreign affairs correspondent for Politico. Illustrations by Erin Aulov and Janet Michaud/Politico. What is the real story of Donald Trump and Russia? The answer is still ...

Objectives: Many studies of air pollution and health are carried out over several geographical areas, and sometimes over several countries. This paper explores three approaches to analysis in such ...

With nearly two decades of retail management and project management experience, Brett Day can simplify complex traditional and Agile project management philosophies and methodologies and can ...

Causal inference is the task of drawing conclusions from data about the effects of treatments and other type of interventions. In epidemiology and clinical research, as well as in many other fields, ...

Notifications You must be signed in to change notification settings Difference-in-differences (DiD) is a statistical method used to estimate the causal effect of a treatment, intervention, or policy ...