Entry 1 sense Webster, 1913 Statistician /(stăt`ĭs*tĭsh"an)/ · Stat·is·ti·cian · IPA /ˌstætɪsˈtɪʃn̩/ 01 n. One versed in statistics; one who collects and classifies facts for statistics. 1. One versed in statistics; one who collects and classifies facts for statistics.