what are class intervals?
<answer> Class Interval is one of the ranges into which data in a frequency distribution table are binned. <context> Class Interval. One of the ranges into which data in a frequency distribution table (or histogram) are binned. The ends of a class interval are called class limits, and the middle of an interval is called a class mark. SEE ALSO: Bin, Class Boundaries, Class Limits, Class Mark, Histogram, Sheppard's Correction.