The New Stochastic Approach (NSA) – unjustly – pretends to promote a better understanding of price index (PI) formulas by viewing them as regression coefficients. As prices in the NSA are assumed to be collected in a random sample (what is particularly at odds with official price...

Ladislaus von Bortkiewicz has criticized chain indices and Irving Fisher's time and factor reversal tests. However, his arguments (published in German articles) though well ahead of his time and still relevant today are widely fallen in oblivion. He was not the only German statistician who...

The theory of (increasingly more generalized types of) statistical means can be used to create a plethora of index formulas. Some of them are new and some were indeed discussed in the past but fallen into oblivion, because their rationale was not well understood. Surprisingly many possess...

The fact that the famous price index of Laspeyres is unable to pass the so called inversion test (IT) gave rise to the idea that this formula tends to measure "spurious inflation" which renders it useless and fallacious. In the IT prices and quantities of n goods, relating to two periods, the...

[Einführung] Nur zufällig, durch die Besprechung eines Buchs (Coyle, 2014) stieß ich auf eine Geschichte, die außerhalb der amtlichen Statistik offenbar wenig Beachtung gefunden hat, aber gerade jetzt interessieren dürfte, wo das Thema Griechenland wieder die Medien sehr beschäftigt. Coyle...

[Vorbemerkung] Wir gehen davon aus, dass der Leser mit der Konstruktion der Lorenzkurve und der Berechnung des darauf aufbauenden Gini-Koeffizient DG durchaus etwas vertraut ist. Im Folgenden beziehen wir uns vor allem auf das Lehrbuch v. d. Lippe 1993 und wir benutzen insbesondere die dort...

Die Bundesnetzagentur reguliert Preise in netzbasierten Märkten. Dazu muss sie Kosten für Netzleistungen ermitteln. Hierbei spielen die verwendeten Preisindizes eine große Rolle. Sind die dazu von der Bundesnetzagentur entwickelten Indizes korrekt? Welche Annahmen und Vorgehensweisen sind...

The note examines a generalization of a theorem of Bortkiewicz which relates the difference between a Paasche and a Laspeyres price index to a covariance between price and quantity relatives. The generalized theorem is used to demonstrate a number of interesting special applications. It turns...

The paper criticizes the translation of the so called GEKS (Gini - Eltetö - Köves - Szulc) method to make consistent (transitive, or "drift free") international comparisons of price indices (parities), into the intertemporal framework. It shows that transitivity appears to be "over-ambitious"...