sphericity


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sphericity

[sfə′ris·əd·ē]
(science and technology)
The degree to which a shape approaches that of a sphere.
References in periodicals archive ?
087) Table 2 ANOVA with Repeated Measures Results for Trust Triggering Appearance Features Feature Sphericity Greenhouse-Geisser Assumption Statistics H1: No difference in Violated F (1.
With respect to the shape factor, indicating the roundness and surface roughness of the evaluated pores, the sphericity was used (0, less rounded and angular; 1, more rounded and smooth) by simulation of the spatial geometry of the pores.
The significance of a 3-5% shape change toward sphericity as it relates to cardiac remodeling is uncertain.
Zoledronic acid improves femoral head sphericity in a rat model of Perthes disease.
Second, Bartlett's test of sphericity (Tobias & Carlson, 1969) was significant ([chi square] (136) =56951.
The assumption of equal variances and correlations across time in the response variable and appropriateness of using the unadjusted univariate F-test values and the sphericity square root transformation (V) test were based on the sphericity of the model.
The resulting PA12 microspheres are regular sphericity, with volume-average diameter about 19.
Such primary investigations prescribe the parameters of particles to be considered (Cavarretta 2009), namely: particle shape, form coefficient, area, perimeter, roundness, angularity and sphericity.
c) Sphericity was not assumed; F-statistic was the average of Greenhouse-Geisser adjusted F-statistic (2.
801) and for the Bartlett sphericity test (associated p-value < 0.
An advantage of MANOVA is that it does not require that the assumptions of compound symmetry and sphericity to be fulfilled.
The chi square for Barlett's Test of Sphericity is 152.