统计 (tǒng jì) is a versatile word meaning both 'statistics' (as a noun) and 'to compile statistics' or 'to tally' (as a verb). The first character 统 (tǒng) means 'to unify' or 'to bring together', while 计 (jì) means 'to calculate' or 'to count'. Together, they convey the idea of gathering data systematically and analyzing it as a unified whole. It’s commonly used in academic, governmental, business, and research contexts — for example, when reporting population figures, survey results, or economic indicators.

This word appears frequently in formal writing and spoken reports, but rarely in casual conversation. As a noun, it’s often paired with classifiers like '项' (a statistic), '数据' (data), or '报告' (report); as a verb, it usually takes an object (e.g., 统计人数 — 'to tally the number of people') and may be followed by aspect markers like 了 or 过. It implies methodical, large-scale counting rather than simple headcounts.