Calculating the mean is one of many methods of finding an average. To calculate the mean, you add up all the numbers in the set, then divide the total by the number of numbers you added.

Mean Formula: Check what is mean, its definition and its formula here. Also, get solved examples of calculating mean for grouped and ungrouped data using direct mean formula and assumed mean method.

Calculating a mean and principles of sampling Investigating transpiration A simple method for investigating water loss from plant leaves is to measure their change in mass over a period of time.