Grand Mean Tn Calculator
Introduction & Importance
Grand Mean Tn, also known as the trimmed mean, is a statistical measure that calculates the average of a data set after removing a specified percentage of the lowest and highest values. This method is useful when dealing with data that has outliers or is not normally distributed.
Office for National Statistics – The UK’s largest producer of official statistics.
Department for Education – Responsible for education and children’s services in England.