A trimmed mean is a way to find the average by first removing a small portion of the highest and lowest values, then calculating the mean from the remaining data.

The geometric mean is the average of a set of products, the calculation of which is commonly used to determine the performance results of an investment or portfolio.

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.

In this KS2 Maths article you'll learn how to calculate a type of average called the mean. We also have KS2 videos, a quiz and lots of examples.

For estimating the mean of a finite population using information on an auxiliary variable, a class of estimators is defined as a function of the ratio of sample mean to population mean and the ratio ...

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.