15Oct
Zeszyt Naukowy no. 45
We kindly invite you to read the latest edition of our Scientific Journal. This time the whole issue is devoted to the problems of economy.
15Oct
We kindly invite you to read the latest edition of our Scientific Journal. This time the whole issue is devoted to the problems of economy.
Internal audits are a requirement of quality management standards. Company management is responsible for scheduled implementation of audits. Auditors must be provided with adequate working conditions, including management’s commitment and support. A development of an efficient audit team is crucial in the achievement of specified quality objectives. Organizations with a committed management team have a higher compliance level with quality standards requirements than organizations with a tendency to transfer the responsibility to the representatives of management.
The aim of this article is to characterize the volatility of share prices of companies belonging to WIG20 and the WIG20 index itself using statistical methods. The share prices of the companies were subject to deep fluctuations in the selected time period. The correlation analysis shows a random nature of the changes. The analysis of the remaining indicators indicates sector connections of companies, i.e. share prices of companies with a similar profile are correlated with one other. The applied method of backward stepwise regression allowed to build a model to predict changes in the WIG20 index with 70% certainty.
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