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What is Calculating Quartiles and IQR for Data about?

This document discusses how to calculate the first quartile (Q1), second quartile (Q2 or median), and third quartile (Q3) for grouped data. It provides the formulas to determine Q1, Q2, and Q3 by finding the appropriate class interval based on the cumulative frequency and then calculating the value within that interval. An example is shown of calculating these values for wage data grouped into class intervals. The interquartile range is defined as the difference between Q3 and Q1. An activity is provided to

Author

Ryan Cris Francisco

Language

EN