Jelaskan Truncated mean dari Mean dalam bahasa sunda

Sometimes a set of numbers (the data) might be contaminated by inaccurate outliers, i.e. values which are much too low or much too high.  In this case one can use a truncated mean. It involves discarding given parts of the data at the top or the bottom end, typically an equal amount at éach end, and then taking the arithmetic méan of the remaining data.  The number of values removed is indicated as a percentage of total number of values.