Software

1. Two basic Excel tools:

  1.1  G test on summary data:    Excel 2013     Excel 97

  1.2 G test on original data:        Excel 2013     Excel 97

Thanks are due to Erik Jan van den Heuvel for acting as a resource and to Enric Comas for assisting in the validation of the tools.

2. Three Matlab routines:

2.1    GTLAMCDF: Probability values - ’t Lam's G cumulative distribution function.

By A. Trujillo-Ortiz, R. Hernandez-Walls, B. Martin-Atienza and J.J. Gonzalez-Rejon, at http://www.mathworks.com/matlabcentral/fileexchange/45922-gtlamcdf.

2.2   GTLAMINV: Critical values - Inverse of  't Lam's G one- and two-sided cumulative distribution function.

By A. Trujillo-Ortiz, R. Hernandez-Walls, B. Martin-Atienza, J.J. Gonzalez-Rejon and M.E. Betancourt-Aguirre, at http://www.mathworks.com/matlabcentral/fileexchange/45943-gtlaminv. 

2.3   GTLAMTEST: 't Lam's G test on summary data.
  

By A. Trujillo-Ortiz, R. Hernandez-Walls, B. Martin-Atienza, R.U.E. 't Lam,  E. Comas, J.J. Gonzalez-Rejon and M.E. Betancourt-Aguirre, at http://www.mathworks.com/matlabcentral/fileexchange/52436-gtlamtest.

The Matlab routines were validated against the Excel tools in cooperation with Enric Comas, and in consultation with Prof. Antonio Trujillo-Ortiz.