The arithmetic mean, often referred to simply as the mean, is a statistical measure calculated by summing all values in a dataset and dividing the sum by the total number of data points. For example, in a dataset of numbers like 10, 20, 30, and 40, the sum is 100, and the arithmetic mean is 25 (100 divided by 4, which is the number of data points). The mean is a commonly used measure of central tendency to describe the average value within a dataset.
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