The empirical rule is a statistical principle that states that for a normal distribution, approximately 68% of the data falls within one standard deviation of the mean, 95% falls within two standard deviations, and 99.7% falls within three standard deviations.

Rule 34 states that if it exists, there is porn of it.

The selection rules determine which transitions are allowed.

I cosplayed as Rule 63 Link at the convention.

The rule of thirds is a fundamental principle in photography.

The rule of reason is a legal doctrine used to assess the antitrust implications of certain business practices.

The rule of recognition is a fundamental concept in legal theory.

I found a box of slide rules in the attic.

The compromise rules in international rules football allow players from Ireland to participate.

The formation rule of this organization is very strict.