Visual Summary:
Finding the Median in a Grouped Frequency Distribution
Find the Middle Score The middle score = n / 2

ê
Find the Class Interval that Contains the Median Use the cumulative frequency column to find
the class interval that contains the median. This is the class interval
that has a cumulative frequency greater than or equal to

ê
Identify L L = the lower real limit of the class
interval that contains the median 
ê
Identify F_{i} F_{i }=_{ }the
frequency in the class interval that contains the median 
ê
Identify CF_{b} CF_{b} = the cumulative frequency in the class interval below the class interval that contains the median

ê
Compute the Median

[Top of Page] [News]
[FAQ] [Hints]
[Course News] [Course Outline] [Chapter Outlines] [Homework] [Practice Tests] [Dr. Vernoy]
Copyright © 2004 by Mark W. Vernoy