class mark

noun

, Statistics.

1. the midpoint of a class interval.

class mark

noun

1. statistics a value within a class interval, esp its midpoint or the nearest integral value, used to represent the interval for computational convenience
2. Also calledclass number library science a symbol on a book or other publication indicating its subject field, shelf position, etc

Word History and Origins

Origin of class mark¹

1885–90, for an earlier sense