Marek Kośny | Uniwersytet Ekonomiczny we Wrocławiu (original) (raw)

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Papers by Marek Kośny

Eastern European Economics

Data and variables description

Never before has market research been so precise. Do you want 100% accurate data about the geogra... more Never before has market research been so precise. Do you want 100% accurate data about the geographic distribution of your product sales? Order a municipal waste morphology study for an area of your choice – so you obtain valuable information about your recipients and your promotional activties will be precise and effective. Logistyka Odzysku, nr 3/2013

Streszczenie. W artykule przedstawiono problem interpretacji wynikow testu wspolczynnika korelacj... more Streszczenie. W artykule przedstawiono problem interpretacji wynikow testu wspolczynnika korelacji Pearsona w powiązaniu z budowanym modelem regresji. Zwrocono przy tym uwage na znaczną wrazliwośc testu istotności na wielkośc proby. W tym kontekście przedstawiono pewien alternatywny sposob testowania oraz rekomendowano znany, lecz stosunkowo rzadko wykorzystywany test, umozliwiający poprawną interpretacje wynikow testu istotności wspolczynnika korelacji.

Commonly used method of determining the quality of research results is the application of signifi... more Commonly used method of determining the quality of research results is the application of significance tests – both parametric and non-parametric. They enable researchers to eliminate low-quality results, when observed differences are the consequence of too small samples. Therefore relatively little attention – also in didactics – is paid to issues of big samples, when the number of observations amounts up to several thousands. Whereas situations, when significance test is applied to big samples requires no less attention than the situations of too small samples. In this context the main aim of the paper is the analysis of results of the significance test for the correlation coefficient (parametric test) and chi-square test for independence (non-parametric test) for samples exceeding 1000 observations. For these tests it will be shown, how imprecise interpretation could lead to the significant distortion of obtained results.

Economics & Sociology, 2017

SSRN Electronic Journal, 2016

Economies, 2019

The article proposes a method to assess the level of economic security, based on the analysis of ... more The article proposes a method to assess the level of economic security, based on the analysis of scenarios of future events. These scenarios cover realistically possible combinations of future events, both positive and negative, allowing for an assessment of their financial implications. The empirical part of the paper contains the results of applying the proposed method to the Polish data. In the scenarios considered, changes in the situation of individuals in the labour market and changes in the level of income and expenditure are taken into account.

Social Indicators Research, 2018

Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu, 2016

Eastern European Economics

Data and variables description

Never before has market research been so precise. Do you want 100% accurate data about the geogra... more Never before has market research been so precise. Do you want 100% accurate data about the geographic distribution of your product sales? Order a municipal waste morphology study for an area of your choice – so you obtain valuable information about your recipients and your promotional activties will be precise and effective. Logistyka Odzysku, nr 3/2013

Streszczenie. W artykule przedstawiono problem interpretacji wynikow testu wspolczynnika korelacj... more Streszczenie. W artykule przedstawiono problem interpretacji wynikow testu wspolczynnika korelacji Pearsona w powiązaniu z budowanym modelem regresji. Zwrocono przy tym uwage na znaczną wrazliwośc testu istotności na wielkośc proby. W tym kontekście przedstawiono pewien alternatywny sposob testowania oraz rekomendowano znany, lecz stosunkowo rzadko wykorzystywany test, umozliwiający poprawną interpretacje wynikow testu istotności wspolczynnika korelacji.

Commonly used method of determining the quality of research results is the application of signifi... more Commonly used method of determining the quality of research results is the application of significance tests – both parametric and non-parametric. They enable researchers to eliminate low-quality results, when observed differences are the consequence of too small samples. Therefore relatively little attention – also in didactics – is paid to issues of big samples, when the number of observations amounts up to several thousands. Whereas situations, when significance test is applied to big samples requires no less attention than the situations of too small samples. In this context the main aim of the paper is the analysis of results of the significance test for the correlation coefficient (parametric test) and chi-square test for independence (non-parametric test) for samples exceeding 1000 observations. For these tests it will be shown, how imprecise interpretation could lead to the significant distortion of obtained results.

Economics & Sociology, 2017

SSRN Electronic Journal, 2016

Economies, 2019

The article proposes a method to assess the level of economic security, based on the analysis of ... more The article proposes a method to assess the level of economic security, based on the analysis of scenarios of future events. These scenarios cover realistically possible combinations of future events, both positive and negative, allowing for an assessment of their financial implications. The empirical part of the paper contains the results of applying the proposed method to the Polish data. In the scenarios considered, changes in the situation of individuals in the labour market and changes in the level of income and expenditure are taken into account.

Social Indicators Research, 2018

Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu, 2016

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