Table 2.

The (2 × 2) contingency table of the response variable

$Y_1$	$Y_2$		Total
	$Y_2=1$	$Y_2=0$
$Y_1=1$	$Y_{11}$	$Y_{10}$	$Y_{1+}$
$Y_1=0$	$Y_{01}$	$Y_{00}$	$Y_{0+}=n-Y_{1+}$
Total	$Y_{+1}$	$Y_{+0}=n-Y_{+1}$	$Y_{++}=n$