20Mar
We are pleased to present our latest issue of the Scientific Journal which is focused on financial an management issues. The papers are interdisciplinary in character and may be helpful both in teaching and business practice.
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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