Quartiles, percentiles and measures of dispersion

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Sample objectives

What this unit covers

• Quartiles, percentiles and measures of dispersion: Determine the quartiles for a small data set and an ungrouped frequency distribution.
• Quartiles, percentiles and measures of dispersion: Estimate quartiles and percentiles from a cumulative frequency polygon or curve and a grouped frequency distribution using linear interpolation, including estimating frequencies for specific parts of the distribution.