The mean kurtosis and skewness of malignant and benign are 3.201, 3.738 and 0.071, 0.463 respectively. The mean kurtosis of benign is significantly high whereas mean skewness is significantly low. Therefore, there is a possibility of utilizing mean skewness and kurtosis pixel values as a potential...
定义12 变异系数(Coefficient of Variation)定义为: CV s ¯ x ×100%. (3.4) 变异系数是刻画数据相对分散性的度量。 定义13 偏度(Skewness)定义为: g 1 n (n −1)(n −2)s 3 n i=1 (x i − ¯ x) 3 = n 2 u 3 (n −1)(n −2)s 3 , (3.5) 其中u k 1 n n ...
Therefore, this study presents the utility of skewness and kurtosis of Apparent Diffusion Coefficient (ADC) to distinguish between benign and malignant brain lesions. All the Magnetic Resonance Imaging (MRI) scans were performed with a 3 Tesla Siemens Skyra MR system using a head coil. The sample...
This paper examines the impact of co-kurtosis on asset pricing using a four-moment capital asset pricing model. It is shown that, in the presence of skewness and kurtosis in asset return distribution, the expected excess rate of return i... H Fang,Tsong‐Yue Lai - 《Financial Review》 被...
measures of skewness and kurtosistransformations of rrobustnessThe distribution of sample correlation coefficient r and some of its transformations are studied in this paper, when the parent population is Morgenstern bivariate exponential distribution(MBVED). The behaviour of r and its transformations is ...
kurtosisnormal distributionrandom splitting methodjackknife techniqueAn optimum unbiased estimator of the variance of mean is given It is defined as a function of the mean and itscustomary unbiased variance estimator, utilizing known coefficient of variation, skewness and kurtosis of the underlying ...
In fact, they can be treated as normal if the absolute values of skewness and kurtosis are not greater than 1 (e.g., Ferrando et al., 2022; Lloret-Segura et al., 2014). When moderate deviations from normality are found, small corrections will suffice and will be discussed in Phase ...
Modeling the effect of skewness and kurtosis on the static friction coefficient of rough surfaces Engineering surfaces possess roughnesses that exhibit asymmetrical height distributions. However, the Gaussian distribution is most often used to character... N Tayebi,AA Polycarpou - 《Tribology International...
A Bayesian model of single sample data is established,and the Bayesian estimation,linear Bayesian estimation and approximate credibility estimation of skewness and kurtosis coefficient are given. Furthermore,the model is extended to multitude data model. In this model,the statistical properties of approxi...
Noun1.regression coefficient- when the regression line is linear (y = ax + b) the regression coefficient is the constant (a) that represents the rate of change of one variable (y) as a function of changes in the other (x); it is the slope of the regression line ...