tǒng / jì / yuán / xiān / suàn / chū / zhè / zǔ / shù / jù / de / zhōng / wèi / shù / zài / bǐ / jiào / píng / jūn / shù

统计员先算出这组数据的中位数，再比较平均数。

The statistician first calculated the median of this data set and then compared it with the mean.