Lets do this in practice. - Sum of your Trimmed Set n - Total Numbers in Trimmed set m - Trimmed Mean. Trimmed Mean and Winsorized Mean Calculator.
This prevents the calculated mean being skewed by extreme values also known as outliers.
Percent observations from both ends. Write down the given set of numbers 8 3 7 1 3 9 in ascending order 1 3 3789 As the trimmed count is 1 we should. Mean is too sensitive to extreme observations. The percentage tells you what percentage of data to remove.