This paper compares the German Gross Domestic Product between 1991 and 2008 with the Ifo business indicators. Because GDP is published quarterly but the Ifo indicators monthly, the most analyses compare these variables by merging the indicators to quarterly data. In this paper an alternative way...

With the world-wide spread of the internet in the 1990s, the conduction of web or e-mail surveys became popular in research. Although these surveys provide fast data collection and reduced costs, results may suffer from biases due to the survey mode. While a variety of studies concerning mode...

Surveys are a widely used tool to answer socio-economic research question across disciplines. However, data collection can face certain problems such as nonresponding units. For household and population surveys, a large body of literature about the effects of nonresponse exist but only less is...

Surveys are a widely used tool to answer socio-economic research question across disciplines. However, data collection can face certain problems such as nonresponding units. For household and population surveys, a large body of literature about the effects of nonresponse exist but only less is...

Die Analyse und Prognose regionaler Konjunkturzyklen gewinnt immer mehr an Bedeutung. Bisher liegt aber keine kohärente Beschreibung und Analyse regionaler Konjunkturzyklen für die 16 Bundesländer in Deutschland vor. In einer dreiteiligen Reihe im ifo Schnelldienst wird beschrieben, wie...

Das ifo Geschäftsklima ist ein Konjunkturindikator, der aus den Ergebnissen der monatlichen Unternehmensbefragungen des ifo Instituts berechnet wird. Die Antworten zu zwei Fragen gehen in diesen Indikator ein: die Bewertung der aktuellen Geschäftslage sowie die Erwartung hinsichtlich der...