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

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

Calculating a t-test requires the difference between the mean values from each data set, the standard deviation of each group, and the number of data values. T-tests can be dependent or independent.

In National 4 Lifeskills Maths use statistics to analyse and compare data sets using mean, median, range, inter-quartile range, and standard deviation.