Changes in version 1.25 o A Correction in is made in Farrar and Glauber Chi-Square formula. o Collinearity diagnostics IND1 and IND2 are added. Changes in version 1.11 o References are updated. o In omcdiag() and imcdiag() output, "COLLINEARITY in not detected by the test" is replaced by "COLLINEARITY is not detected by the test" o In omcdiag output, "Condition Indices" is updated to "Condition Indices" Changes in version 1.3.2 (2026-01-18) o Citation New Citation Style is update. o Fixing of Escaped LaTeX specials' All the 'Escaped LaTeX specials' are fixed in the Rd files. o Invalid URL/DOI Invalid URL from CITATION and .Rd files is fixed. Changes in version 1.3.1 (2020-06-29) o Input argument x in all functions of mctest package is changed to model.matrix() instead of as.matrix() for the acdeptance of factor variables as regressors. The numeric condition of X matrix is also omitted. Changes in version 1.3 (2020-05-21) o Input argument x and y are deferred. o A model object (mod), not necessarily type lm is taken as input argument in all of the functions mctest(), imcdiag(), omcdiag(), eigprop(), and mc.plot(). o VIF and Eigen values reference line (agains threshold value) in mc.plot() is enhanced. Changes in version 1.2 (2018-02-25) o A function eigprop() is added that computes the eigenvalues, condition indices and variance decomposition proportion collinearity diagnostic procedures found in Belsley, Kuh, and Welsch (1980). o References are updated and doi are added. o The x-axis label is removed to avoid the confusion of relating regressors with eigenvalues dimensions. Changes in version 1.1 (2016-12-05) Addition o An option (all) for imcdiag() and mctest() is included that will show the output for all individual multicollinearity diagnostics as 1 or 0 if the values are above or below the threshold. o Examples related to the use of all argument are added. o Help files are improved. Bug Fix o Bug is fixed.