Mean
a measurement of average; the sum of a set of numbers divided by the number of numbers in a set
In basic terms, the mean is a measure of central tendency in statistics which represents the average value of a group of numbers. It is also commonly called the arithmetic mean, and it is calculated by adding up all the numbers in a given data set and dividing by the total number of values in the set.
For example, consider the following set of numbers: 2, 4, 6, 8, and 10. The mean of this set can be calculated as follows:
Mean = (2 + 4 + 6 + 8 + 10) / 5 = 30 / 5 = 6
Therefore, the mean value of this data set is 6. It is important to note that the mean is sensitive to outliers or extreme values in the data set, which could significantly affect the overall value. Thus, it is often used in combination with other measures of central tendency such as median or mode.
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