average deviation


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Related to average deviation: standard deviation, quartile deviation

average deviation

[′av·rij ‚dē·vē′ā·shən]
(mathematics)
In statistics, the average or arithmetic mean of the deviation, taken without regard to sign, from some fixed value, usually the arithmetic mean of the data. Abbreviated AD. Also known as mean deviation.
References in periodicals archive ?
The average deviation of all the 140 samples is 1.7644 and the coefficient R is 0.97089.
Caption: Figure 9: Cumulative mean errors during five time intervals (0- 50)[tau], (50-100)[tau], (100-150)[tau], (1000-1500)[tau], and (7000-8000)[tau] and final average deviation.
The results show that overall accuracies are 97.196% and 78.333%, respectively, increased by 24.080%; kappa coefficient is 0.946 and 0.260, respectively, increased by 264.364%; gully head average deviations are 2.202 m and 5.566 m, respectively, reduced by 60.448%; gully edge line average deviations are 3.271 m and 10.036 m, respectively, reduced by 67.406%.
(15.) The insignificant results about Y1's and Y16's price amplitudes and normalized average deviations might be partially due to the fact that there are only seven observations available for the signed-rank tests here.
The Table 1 presents the summarized results for the values of percentage of success and percentage of relative average deviation for the methods [IG.sub.LS] and HE-NIFS.
% Average deviation in symmetric and asymmetric CPW on isotropic substrate against results of HFSS ([h.sub.3] = 3 [micro]m, [sigma] = 4.1 x [10.sup.7] S-m, 1 GHz-100 GHz).
Both models had a quite high average deviation of over 30%.
The ST-4 well was designed and successfully drilled as a deviated well bore through the Upper Ordovician, penetrating 364m of the objective Bir Ben Tartar Formation at an average deviation angle of 77 degrees.
In table 1 the "average deviation ratios" are calculated, in order to compare the accuracy of the profit distribution rules.
Table 3 also reports an absolute measure of the prediction error ([square root of MSE]) (9) While over-and underpredictions may cancel each other out and give a low average deviation, this measure is always positive.
Where Ra is the arithmetic average deviation from the mean line, L is sampling length and Y represents the ordinate of the profile curve.
The average deviation [DELTA][T.sub.exp] = 0.013 [+ or -] 0.003 K between these two results is a small number but is significantly not zero (this is due to the high precision of measurement).

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