Table 2.

Is an example of a confusion matrix for a study that has three classes.

	Predicted class
		Class 1	Class 2	Class 3
Actual Class	Class 1	C₁₁	C₁₂	C₁₃
	Class 2	C₂₁	C₂₂	C₂₃
	Class 3	C₃₁	C₃₂	C₃₃