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average deviation

average deviation

6.0
A number that shows how far numbers usually are from the middle value
  • noun
  • /ˈævərɪdʒ ˌdiːviˈeɪʃən/
  • Specialized
translation icon : desviación media
  • To understand variability in test scores, we calculated the average deviation from the class average.

Examples

  • The overall average deviation in such cases was 2.20 above the historical mean (SD = 2.1).

    Academic text (1991)
  • This average deviation was significantly different from zero (z score = 18.6).

    Academic text (1991)
  • Most Common: Table 2 Mean Frequencies and Average Deviations of Some Disciplinary Techniques in K through 8th Grades.

    Academic text (2000)
  • Thus, compared to the issuer nationality approach, the transaction location approach is likely to lead to a greater, not smaller, average deviation between each U.S. issuer's required level of disclosure and its socially optimal one.

    Academic text (1998)
  • Table 2 displays the mean frequencies of occurrence and average deviations of the three most and the three least common discipline techniques that teachers adopted in K through 8th grade classrooms during a 50-minute observation session.

    Academic text (2000)
  • The average deviation of the data set indicates how much the values typically differ from the mean.

  • Researchers often use average deviation to measure how spread out the responses are from the overall average.

Synonyms

average absolute deviation
vsaverage deviation
  • Specialized
8.1

A number that shows the typical distance of numbers in a set from their middle value

is the shorter label for the same statistical measure
mean deviation from the mean
vsaverage deviation
  • Specialized
8.1

The average distance of each number from the group's average

allows any central point rather than only the set mean
mean deviation
vsaverage deviation
  • Specialized
7.1

A measure showing how much numbers differ from their average

uses a general central point instead of restricting to the set mean

How Variable

variance
  • Specialized
32 7.2
standard deviation
  • Specialized
8 4.7
average deviation
  • Specialized
6.0
stability
363 3.1

Surface Forms

Morphology

average + deviation

The phrase is directly compositional: 'average' (a mean) applied to 'deviation' (differences from a central point) yields the idea of the mean of deviations. This construction follows standard noun+noun combination patterns (and similar labels exist in other languages), so a B1 learner who knows both constituents would readily infer the general statistical meaning, even if precise technical details require domain knowledge.

Etymology

The noun average deviation paints a clear picture: you look at each number's deviation, how far it is from the middle, measure those distances, and then find their average. So it means the typical distance of values from the middle, a simple way to show the data's 'spread' or 'variability'.