Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A truncated mean or trimmed mean is a statistical measure of central tendency, much like the mean and median. It involves the calculation of the mean after discarding given parts of a probability distribution or sample at the high and low end, and typically discarding an equal amou ...Full description
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A truncated mean or trimmed mean is a statistical measure of central tendency, much like the mean and median. It involves the calculation of the mean after discarding given parts of a probability distribution or sample at the high and low end, and typically discarding an equal amount of both. For most statistical applications, 5 to 25 percent of the ends are discarded. In some regions of Central Europe it is also known as a Windsor mean, but should not be confused with the Winsorized mean, which is similar but distinct. The index of the mean is an indication of the percentage of the entries removed on both sides. For example, if you were to truncate a sample with 8 entries by 12.5%, you would discard the first and the last entry in the sample when calculating the truncated mean.