Arithmetical mean


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Related to Arithmetical mean: Weighted arithmetic mean
See Mean.

See also: Arithmetical

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Although in the past, roughness was mostly described by the two-dimensional Ra value (a measure of the variation in height), 3D measurements, including the arithmetical mean height of the surface (Sa), texture aspect ratio (STr), interfacial area ratio (Sdr), core void volume (Vvc) and valley void volume (Vvv) are all now commonly used to describe a desired end result.
The metal surface roughness parameters ([R.sub.q] is the root-mean-square deviation of the roughness profile, [R.sub.a] is the arithmetical mean deviation of the roughness profile, [R.sub.p] is the maximum peak height of the roughness profile, [R.sub.v] is the maximum valley depth of the roughness profile, and [R.sub.z] is the maximum height of roughness profile) were determined with NT-MDT software application [13].
Arithmetical mean roughness (Ra) is effective for controlling the finishing process and discussing the friction of brake discs finished in the same process.
3 Arithmetical mean of the initial and final values regarding the evaluation of coordination, balance and stability of the experimental group of subjects Evaluation of...
This definition is the natural extension of ranks r = 1 (arithmetical mean) and r = 2 (geometrical mean),
The frequency, percentage, arithmetical mean and standard deviation of the answers were calculated.
The arithmetical mean roughness of the seed surfaces was 0.56 gm for alfalfa.
There are known assessment methods of integrated indices of raw gas treatment quality by means of grouping of single-type indices o determination in them arithmetical mean values and summation of the latter by groups taking into account their weightiness coefficient.
Since arithmetical mean is the rate with the highest data concentration within a given distribution and that scale 4 corresponds to the highest stress rate in the ranking given above, the mean which is closest to the maximum scale represent the highest stress level (STREINER; GEOFREY, 2003).
by Tayte Lutz and Douglas Smith, French Oil Mill Machinery, and Joe Ouellette, Acrolab Table 1--height parameter definitions Height parameter Definition Sa Arithmetical mean height Mean surface roughness.
Weighted mean is less than arithmetical mean which lead us to the conclusions that the tariff (as percentage of income) is higher in smaller agglomerations.
Further, it is considered arithmetical mean of these constants, i.e.