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This document provides information and examples on calculating statistics such as mean, median, modal class, and interquartile range from grouped frequency data presented in tables and graphs including histograms and frequency polygons. It gives the definitions and formulas for calculating these measures of central tendency and dispersion. Examples are provided to demonstrate how to complete frequency tables from raw data, calculate statistics, and draw histograms and frequency polygons.

Author

Xiu Yun

Language

EN