double ContingencyTable_cramersStatistic (ContingencyTable me) {
double chisq, sum = 0;
long df, nr = my numberOfRows, nc = my numberOfColumns, nmin = nr;
if (nr == 1 || nc == 1) {
return 0;
}
for (long i = 1; i <= nr; i++) {
for (long j = 1; j <= nc; j++) {
sum += my data[i][j];
}
}
if (nc < nr) {
nmin = nc;
}
nmin--;
ContingencyTable_chisq (me, &chisq, &df);
if (chisq == 0 && df == 0) {
return 0;
}
return sqrt (chisq / (sum * nmin));
}
double ContingencyTable_chisqProbability (ContingencyTable me) {
double chisq, df;
ContingencyTable_chisq (me, &chisq, &df);
if (chisq == 0.0 && df == 0.0) {
return 0.0;
}
return NUMchiSquareQ (chisq, df);
}
double ContingencyTable_contingencyCoefficient (ContingencyTable me) {
double chisq, sum = 0;
long df, nr = my numberOfRows, nc = my numberOfColumns;
for (long i = 1; i <= nr; i++) {
for (long j = 1; j <= nc; j++) {
sum += my data[i][j];
}
}
ContingencyTable_chisq (me, &chisq, &df);
if (chisq == 0 && df == 0) {
return 0;
}
return sqrt (chisq / (chisq + sum));
}
void structContingencyTable :: v_info () {
structData :: v_info ();
long ndf;
double h, hx, hy, hygx, hxgy, uygx, uxgy, uxy, chisq;
ContingencyTable_entropies (this, &h, &hx, &hy, &hygx, &hxgy, &uygx, &uxgy, &uxy);
ContingencyTable_chisq (this, &chisq, &ndf);
Melder_information (L"Number of rows: ", Melder_integer (numberOfRows));
Melder_information (L"Number of columns: ", Melder_integer (numberOfColumns));
Melder_information (L"Entropies (y is row variable):");
Melder_information (L" Total: ", Melder_double (h));
Melder_information (L" Y: ", Melder_double (hy));
Melder_information (L" X: ", Melder_double (hx));
Melder_information (L" Y given x: ", Melder_double (hygx));
Melder_information (L" X given y: ", Melder_double (hxgy));
Melder_information (L" Dependency of y on x: ", Melder_double (uygx));
Melder_information (L" Dependency of x on y: ", Melder_double (uxgy));
Melder_information (L" Symmetrical dependency: ", Melder_double (uxy));
Melder_information (L" Chi squared: ", Melder_double (chisq));
Melder_information (L" Degrees of freedom: ", Melder_integer (ndf));
Melder_information (L" Probability: ", Melder_double (ContingencyTable_chisqProbability (this)));
}
void structContingencyTable :: v_info () {
structDaata :: v_info ();
double ndf;
double h, hx, hy, hygx, hxgy, uygx, uxgy, uxy, chisq;
ContingencyTable_entropies (this, &h, &hx, &hy, &hygx, &hxgy, &uygx, &uxgy, &uxy);
ContingencyTable_chisq (this, &chisq, &ndf);
MelderInfo_writeLine (U"Number of rows: ", numberOfRows);
MelderInfo_writeLine (U"Number of columns: ", numberOfColumns);
MelderInfo_writeLine (U"Entropies (y is row variable):");
MelderInfo_writeLine (U" Total: ", h);
MelderInfo_writeLine (U" Y: ", hy);
MelderInfo_writeLine (U" X: ", hx);
MelderInfo_writeLine (U" Y given x: ", hygx);
MelderInfo_writeLine (U" X given y: ", hxgy);
MelderInfo_writeLine (U" Dependency of y on x: ", uygx);
MelderInfo_writeLine (U" Dependency of x on y: ", uxgy);
MelderInfo_writeLine (U" Symmetrical dependency: ", uxy);
MelderInfo_writeLine (U" Chi squared: ", chisq);
MelderInfo_writeLine (U" Degrees of freedom: ", ndf);
MelderInfo_writeLine (U" Probability: ", ContingencyTable_chisqProbability (this));
}