Cross-tabulations of events can identify interactions and check the developing story more formally.
Cross tabbing can point out counter-indications.
There is no way to figure out where any interactions are located.
a dog eats banana
Two players are jumping for a basketball.
The parking lot is entirely safe
He might receive a discounted rate for mailing it from Los Angeles.
Smokers are involved in less accidents than non-smokers.
In season sales usually bring big reductions.