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class mark

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noun Statistics.
  1. the midpoint of a class interval.
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Origin of class mark

1885–90, for an earlier sense
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for class mark

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 called: class number library science a symbol on a book or other publication indicating its subject field, shelf position, etc
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012