Related Posts & Gallery Pages. 1  Common questions about using logo files. 2  What logo image file to use where. 3  Basic file format bundle. 4  Free guide to logo formats. 5  What logo files do I use for.. 6  Professional package file formats â vectors & bitmaps.
Average Deviation. In statistics, the absolute deviation of an element of a data set is the absolute difference between that element and a given point. The average deviation of a data set is the average of the absolute deviations. The average deviation is also called the average absolute deviation.
standard deviation. a measure of the dispersal of a random variable; the square root of the average squared deviation from the mean. For data that have a normal distribution about 68% of the data points fall within one standard deviation from the mean and 95% fall within two standard deviations. Symbol is Ï.tandard deviation (SD) the dispersion of a random variable; a measure of the amount by which each value deviates from the mean. It is equal to the square root of the variance.