Selected methods of substantive testing and application of statistical tools in audit

Audit is an interdisciplinary activity which requires, nowadays more than ever in the past, knowledge and skills in the field of accounting and related financial knowledge, as well as from other non-financial sectors (such as the statistics or the information technology). The use of statistics in the audit may not be entirely obvious at first sight and thus the main aim of this thesis is to point out possible ways to apply statistical tools in substantive testing (which represents an important stage of the audit work). The most important use of statistics in the audit can be found in sampling methods. The range of a tested population may be too wide for testing the whole population that leads to the fact that it is necessary to select an audit sample appropriately. The thesis outlines what kind of method and technique of selection to choose and how to generalize the results obtained during the sample testing to the entire population. Besides the main aim in the form of the application of statistical tools in the audit, the thesis also focuses on a brief description of the audit history, polemic of current understanding of the term audit, professional organizations and regulations of the audit in the Czech Republic and description of individual stages of audit work (especially on a detailed analysis of a substantive testing).