Terms used in official statistics

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Average absolute deviation


A classic measure of variability. The average of the absolute deviations from the variable's arithmetic mean.The average deviation is applied when: 1) the distribution of the examined feature is symmetrical or near symmetrical; 2) there are extreme values which, after rising to the square, would significantly burden the standard deviation.

High-level terms

Low-level terms:

Contact person on methodology:
Waldemar Popiński