集中趋势(指匀数、中数与众数而言);
Results A total of 222 measles confirmed cases were reported from the Measles Surveillance System in 2005 in Huai'an, of which 47 were clinical confirmed cases and 175 were laboratory confirmed; the incidence rate was 4.34/ lakh, with central tendency between April and June.
结果2005年淮安市麻疹监测系统共报告确诊麻疹222例,其中临床确诊47例,实验室确诊175例,发病率为4.34/10万。
Aggregate stability comes from a stable central tendency.
总体稳定是来自一系列的中间趋势.
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