Monitoring and statistical evaluation of key operational economic parameters of a selected group of tractors with high performance engines.

Theme of this bachelor thesis is based on gaining and evaluation of the principal economic-operating dates. The significant categories of tractors of higher performance were subject of investigation. My work was focused on evaluation of the economic data, e.g. the repair- and maintenance- costs found in invoices, bookkeeping documents and economic results of agriculture companies. These costs-level were analysed depending on the time operation of tractors and assessed by means of statistic methods and comparing with the normative figures