该韦氏字典定义一个偶然事件或情况为
1 : likely but not certain to happen : possible
2 : not logically necessary; especially : empirical
3 a : happening by chance or unforeseen causes
b : subject to chance or unseen effects : unpredictable
c : intended for use in circumstances not completely foreseen
4 : dependent on or conditioned by something else
5 : not necessitated : determined by free choice
关于当前的统计术语,既然在许多不同情况下都使用列联表来表示各种各样的数据,为什么我们称它们为“列联”表?术语中的“偶然性”一词在以上五种含义中使用?