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Calculating averages from grouped data - KS3 Maths - BBC

Learn about calculating averages from grouped data with this BBC Bitesize Maths article. For students between the ages of 11 and 14.
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Formula of Median: How to Calculate for Grouped, Ungrouped Numbers and ...

Formula of Mode: Know to How to Calculate Median for Grouped, Ungrouped Numbers along with questions with solution.