摘要：In 2011, the methodology of the Average Earnings Information System (ISPV) was harmonized with the methodologyapplied in the wage statistics of the Czech Statistical Office (CZSO). The benefit of the harmonisationrests in improved quality of the published wage statistics. Within the harmonisation, the ISPV population wasextended by economic subjects not monitored before. The extension of the ISPV population allowed to calculatemore accurate numbers above all on employees, and thus since 2011, all ISPV publications has newlystated weighed numbers of employees. Due to the harmonisation, the gross monthly wage median for the wagesphere decreased in 2011. Despite the harmonisation, there are still differences between both surveys due tothe specifics of the ISPV survey.
关键词：Sample survey; population; sample design; stratification; harmonisation of statistics;wages and salaries
