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OPEN ENDED CLASSES

Statistics Directorate    
Definition:
If, in a frequency distribution, the initial class interval is indeterminate at its beginning and/or the final class interval is indeterminate at its end, the distribution is said to possess “open ended” classes.

This feature is undesirable owing to its effect upon certain calculations which require the central value of the class interval, e.g. the power moments. On the other hand, it usually has no effect upon the calculation of the quantiles and in particular the median value of the variate.

Source Publication:
A Dictionary of Statistical Terms, 5th edition, prepared for the International Statistical Institute by F.H.C. Marriott. Published for the International Statistical Institute by Longman Scientific and Technical.

Statistical Theme: Methodological information (metadata)

Created on Thursday, May 23, 2002

Last updated on Monday, March 10, 2003