the mean is the average of all numbers and is sometimes called the arithmetic mean.
in the data center, means and medians are often tracked over time to spot trends, which inform capacity planning or power cost predictions.the statistical median is the middle number in a sequence of numbers. to find the median, organize each number in order by size; the number in the middle is the median.
the mode is the number that occurs most often within a set of numbers.
the range is the difference between the highest and lowest values within a set of numbers.