Definition:Class Interval/Class Mark
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Definition
A class mark is a value within a class interval used to identify that class interval uniquely.
It is usual to use the midpoint.
Class Midpoint
When a class mark is defined to be the midpoint of the class interval it identifies, it is often called the class midpoint.
Sources
- 2011: Charles Henry Brase and Corrinne Pellillo Brase: Understandable Statistics (10th ed.): $\S 2.1$
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): class mark