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In statistics and probability theory, the median is the value separating the higher half from the lower half of a data sample, a population or a probability distribution.
For a data set, it may be thought of as the "middle" value. For example, the basic advantage of the median in describing data compared to the mean (often simply described as the "average" or "MA") is that it is not skewed so much by a small proportion of extremely large or small values, and so it may give a better idea of a "typical" value.
In the settings you can select the period over which the average value will be found
Example of calculating values 1,2, 4, 1, 1, 2, 7:
Moving average - (1 + 2 + 4 + 1 + 1 + 2 + 7) / 7 = 2.57
Medina - 1,1,1, 2,2,4,7 = 2