The bracket placement in the equations of Liu biasing parameter is corrected for the dest() function.
References, citation, and DOI are added where applicable.
Arugements of legend() in all plots are modified for further improvement.
Help file for summary statistics is improved.
Correction in made in computation of Adjusted R-Sqaure.
Correction is made in computation of intercept term (Intercept term in column 2 of summary statistics).
Some correction is made in standard error of Intercept term and there corresponding t-statistic and p-value (Intercept term in Column 3, 4 and 5).