Exploratory factor analysis (EFA) is an important tool in data analyses, particularly in social science. Usually four steps are carried out which contain an large number of options. One important option is the number of factors and the association of variables with a factor. Our tools aim to...

The Ifo Business Climate is the most important indicator for the business cycle in Germany. In 1993 the connection between the two components of the business climate - business situation and business expectations - was graphically portrayed by Ifo in a 4-quadrant scheme: the Ifo Business Cycle...

The IFO Business Climate is the most important indicator for the business cycle in Germany. In 1993 the connection between the two components of the business climate – business situation and business expectations – was graphically portrayed by Ifo in a 4-quadrant scheme: the IFO Business...

This article develops a factual analysis of the renewable energy transition in Germany. Startingfrom the German decision to phase-out from nuclear power, an economic discussion is conducted on the specificities of this energy shift and its associated economic and environmental constraints. In...

Depending on data source, estimates of hours of work give widely different results both as to level and change. In this paper three alternative measures of hours worked are used to estimate a simple labour supply function to investigate if estimated wage rate and income effects are data...