Sphericity - Wikipedia
Sphericity is a measure of how closely the shape of an object resembles that of a perfect sphere. For example, the sphericity of the balls inside a ball bearing determines the quality of the bearing, such as the load it can bear or the speed at which it can turn without failing.
统计学之球形检验（Mauchly's test of sphericity） - CSDN博客
2018年9月3日 · 球形检验（Mauchly’s test of sphericity），适用于重复测量时检验不同测量之间的差值的方差是否相等，用于三次以及三次之上（想也能够想明白，两次重复测量根本就没有办法比较差值的方差，因为只有一个方差）。. 例子：. 从方差看出，17可能与10.3差别很大 ...
Understanding Sphericity - An introduction to, testing for, and ... - Laerd
Sphericity is the condition where the variances of the differences between all combinations of related groups (levels) are equal. Violation of sphericity is when the variances of the differences between all combinations of related groups are not equal. Sphericity can be likened to homogeneity of variances in a between-subjects ANOVA.
球度 - 百度百科
当处理大量沉积物之形状分析时，通常多用平均球度（Mean Sphericity）或平均 偏差 （Mean Deviation）表示其形状。 平均偏差=∑（平均球度－各颗粒之球度）÷颗粒数
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英 [sfɪə'rɪsɪtɪ] 美 [sfɪ'rɪsətɪ] 释义. n. 球状，球形; 球性; 球度. 实用场景例句. 全部. Error of minimum zone applies to the criterion of Sphericity Error of minimum condition principle. 最小区域法是符合最小条件的一种直线度误差评定方法,但较难实现. 互联网. Concentricity, sphericity of micro shells prepared by the technique was typically more than 98 %, 99 % respectively.
Sphericity - an overview | ScienceDirect Topics
Sphericity is a measure of how spherical an object is. Proposed by Waddell in 1935, the sphericity of a particle is defined as the ratio of the surface area of an equal-volume sphere to the actual surface area of the particle: where Vp is volume of the …
Sphericity - Oxford Reference
2024年10月26日 · An expression of how closely the shape of a grain resembles the shape of a sphere. Sphericity can be determined by examining the relation between the long (L), intermediate (I), and short (S) axes of the particle, the maximum projection sphericity, Ψ, being given by the expression Ψ = 3 √ (S2 / LI).
How to Calculate Sphericity - Sciencing
2020年12月22日 · You can calculate sphericity of an object by determining the volume and surface area of it to figure out how close an object is to a sphere. The surface area of a cylinder and surface area of a sphere are used in these calculations. You …
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Sphericity - (Statistical Methods for Data Science) - Fiveable
Sphericity is a statistical assumption that relates to the equality of variances of differences between levels of a repeated measures factor. It plays a crucial role in the accuracy of statistical tests like ANOVA, especially when analyzing data with multiple measurements taken on …
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