Analiza zależności między wartością współczynnika asymetrii a wartością semiodchylenia standardowego stóp zwrotu wybranych indeksów giełdowych I spółek
Analysis of the Relationship Between Asymmetry Coefficient Value And Standard Semi Deviation Value of Rates of Return For Selected Stock Market Indices and Joint-stock Companies

Summary/Abstract: The paper analyses the value of standard semi deviation and the value of asymmetrycoefficient of rates of return on the WIG20 companies and selected stock market indicesin the years 2010–2013. In place of the standard semi deviation variable s = delta - element2*SV was introduced, which is a measure of distribution asymmetry. In order to prove the linearrelationship between variable s and the asymmetry coefficient, Student’s t-test was conducted.Then the parameters of the linear regression function as well as the value of Pearsonlinear correlation coefficient were estimated. To assess the quality of the derived model, thecoefficient of linear determination was calculated. The statistical significance of structuralparameters was examined using Student’s t-test.δδΔΔ√ √ δs= σ – 2×SVs= σ – 2×SV

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