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Analiza porównawcza średniego odsetka czasu przebywania w pierwszej i drugiej połowie dnia - badania empiryczne

100%
Czernik T., Iskra D.
Studia Ekonomiczne
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2014
|
vol. 191
7-14
EN
In the paper, authors present the analysis of the relative occupation time. The ana- lysis concerns the mean of relative occupatio n time determined on the basis of the stock price taken from the first and second half of the day. The presented analysis does not exhaust the family of possible applica tions of occupation time functional.
2
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Efektywność informacyjna a zachowanie cen akcji tworzących indeks WIG20

100%
Buła R.
Studia Ekonomiczne
|
2014
|
vol. 177
152-167
EN
This article deals with problem of informational efficiency of capital markets. In the first part theory of efficient capital markets created by Eugene Fama is described. The evolution of efficient capital market definition is presented and a new one is introduced. In the next part of the article proper null hypothesis is constructed and methods used to verify it are discussed. Author presents three groups of verification techniques: tests of autocorrelation, tests of randomness and unit root tests. In the third part of the text results of these statistical tests applied to prices of shares included in WIG20 index and values of this index as well are described. In the last part of article economic consequences for investors are presented.
3
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Wpływ czynników makroekonomicznych na ceny akcji na polskim rynku giełdowym

84%
Celej M.
Studia Ekonomiczne
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2014
|
vol. 204
30-46
EN
The article is devoted to analysis of correlation between rates of return of stocks and stock market indexes listed on the Stock Exchange in Warsaw with dynamics of macroeconomic and market factors. The purpose of this article was attempt to determine whether there factors are correlated linearly with changes of stock prices on the stock market and the degree of this dependence. Assuming that the variables are stationary, empirical studies was based on Pearson's linear correlation coefficients. There were analyzed 427 stocks and 18 indexes for the whole period of their quotations. On this basis there were set the number of companies whose correlation coefficient was located at certain intervals in the range of -1 to 1, according to the J. Guilford's classification, and the percentage of these companies.
4

Rynek aukcyjny dzieł sztuki w latach 1989-2007

84%
Ziemiecki J.
Wiadomości Statystyczne. The Polish Statistician
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2009
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issue nr 4
54-62
XX
Artykuł zawiera analizę działalności rynku aukcyjnego. Dane, na których oparto analizę, zaczerpnięto z roczników aukcyjnych. Celem artykułu było pokazanie tej działalności w ujęciu statystycznym. Na podstawie wyliczeń w cenach porównywalnych z grudnia 2007 r. dokonano dynamicznych analiz porównawczych. Analiza rynku aukcyjnego wykazała, że osiągnął on najwyższe obroty w 2000 r. Można to powiązać z liberalnymi przepisami dotyczącymi obrotu (również z zagranicą) oraz ze stopniowym wyczerpywaniem się możliwości kolejnych dostaw na aukcje dzieł starych mistrzów, szczególnie malarstwa. Jednocześnie stwierdzono dynamiczny wzrost liczby dzieł twórców współczesnych. Na użytek artykułu sporządzono dwa rankingi dzieł o najwyższej wartości: dla 50 twórców dawnych i 20 twórców współczesnych.(abstrakt oryginalny)
EN
The paper contains the analysis of auction market activity based on data of auction yearbooks. The aim of the article is to present the auction market activity in a statistical form. Dynamic comparative analyses were calculated in prices of December 2007. The analysis demonstrated the highest turnover of the market in the year 2000. It can be connected with liberal rules concerning turnover, including foreign trade, as well because of running low supplies of old art works (especially paintings). At the same time, the increased works quantity of contemporary authors was discovered. Two rankings of the highest value works were prepared for the purpose of the article: for 50 old and 20 contemporary authors.(original abstract)
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