Statistically means according to what the collected numbers show. Statistically significant, statistically unlikely, statistically speaking.
Statistically significant is the phrase to be careful with: it means the result is unlikely to be chance, not that it is large or important. Statistically speaking is a softener that concedes the individual case may differ.
1adverbstatisticallyAccording to what the collected numbers show.
“Statistically, flying is much safer than travelling by car.”
statistically is a manner.
From statistical + -ly.
Etymology from Wiktionary, CC BY-SA