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

To find an approximate value for the mean from a grouped frequency table, the value of the midpoint of each class interval is used to represent all the values in the class.

In National 4 Maths learn to calculate the mean, mode, median and range from a frequency table. Draw a pie chart and find the chance of it happening.