There is no symbol for underscore in Nemeth Code. If you are using (456, 456) within the table then you must be doing column 1 in CBC. Is that correct? In order to offer an opinion about the construction of the underscore in the equations below the table, I need some idea of what their meaning is.
Judging by the text following the Table, the chi2 is chi-squared, yet the 2 is not shown in a superscript position. Is this all a computer output?