You want to run an experiment where you anticipate finding a treatment effect. How large should your sample size be to have a reasonable chance of detecting significant results? In this manuscript, I present and explain the Stata code I use to address this question. The code uses simulations to...

Automatisiertes Maschinelles Lernen (AutoML) sowie Low-Code und No-Code versprechen, im Sinne des Citizen Developer-Konzepts eine einfachere Nutzung von Künstlicher Intelligenz (KI) indem die erforderlichen Programmierkenntnisse bzw. der Entwicklungsaufwand reduziert werden. Diese neuen...

We develop an R package panelView and a Stata package panelview for panel data visualization. They are designed to assist causal analysis with panel data and have three main functionalities: (1) they plot the treatment status and missing values in a panel dataset; (2) they visualize variables of...

Das Projektmanagement gewinnt aufgrund kürzerer Produktlebenszyklen und eines schnelleren technologischen Wandels an Bedeutung. Für ein erfolgreiches Projektmanagement ist die Unterstützung durch geeignete Projektmanagementsoftware erforderlich. Da hierfür zahlreiche Produkte auf dem Markt...

In this paper we focus on alternative procedures for calculating and interpreting quality-adjusted price indexes for microcomputers, based on a variety of estimated hedonic price equations. Our data set comprises an unbalanced panel for 1265 model observations from 1982 to 1988, and includes...

This article describes qregsel, a Stata module to implement a copula-based sample selection correction for quantile regression recently proposed by Arellano and Bonhomme (2017, Econometrica 85(1): 1-28). The command allows the user to model selection in quantile regressions using either a...

Excel is used to build a simulation of the TI BAII-Plus financial calculator to illustrate the N, I/Y, PV, PMT, and FV inputs. Unlike other financial calculator simulators, this template also displays the corresponding Excel functions to aid in transitioning the student to using Excel for...

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...