Learn about calculating averages from grouped data with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

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

Stefan H. Steiner, Grouped Data Exponentially Weighted Moving Average Control Charts, Journal of the Royal Statistical Society. Series C (Applied Statistics), Vol. 47, No. 2 (1998), pp. 203-216 ...