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

Formula of Mean: Know to How to Calculate Median for Grouped, Ungrouped data along with solved examples, questions with solution.

Determining averages with grouped data The mean We already know how to find the mean from a frequency table. Finding the mean for grouped data is very similar.

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

This note begins by describing the problems that arise when variables are measured with noise. The note progresses to explain how to test for and correct heteroskedasticity. It also explains why it is ...