In this work, we show that Spearman’s correlation coefficient test about H0:ρs=0 found in most statistical software is theoretically incorrect and performs poorly when bivariate normality assumptions are not met or the sample size small. There common misconception tests ρs=0 robust to deviations from normality. However, under certain scenarios violation of assumption has severe effects on type ...

In the typology of coefficients correlation, we seem to miss such estimators correlation as rank–polyserial ( R RPS ) and rank–polychoric RPC correlation. This article discusses a set options RP , including both . A new coefficient JT gX based on Jonckheere–Terpstra test statistic is derived, it shown carry essence Such traditional Goodman–Kruskal gamma G Somers delta D dimension-corrected 2 ar...

Antitubercular activity of 5-nitrofuran-2-yl Derivatives series were subjected to Quantitative Structure Activity Relationship (QSAR) Analysis with an effort to derive and understand a correlation between the biological activity as response variable and different molecular descriptors as independent variables. QSAR models are built using 40 molecular descriptor dataset. Different statistical re...