What is the primary purpose of the “Confusion Matrix” in the evaluation of classification models?

To visualize data
To build predictive models
To summarize data
To display the counts of true positive, true negative, false positive, and false negative predictions

The correct answer is D. To display the counts of true positive, true negative, false positive, and false negative predictions.

A confusion matrix is a table that is used to evaluate the performance of a classification model. It is a square matrix with four cells, each of which represents the number of instances that were classified as a particular class. The four cells are:

  • True positive (TP): The number of instances that were actually in the positive class and were correctly classified as such.
  • True negative (TN): The number of instances that were actually in the negative class and were correctly classified as such.
  • False positive (FP): The number of instances that were actually in the negative class but were incorrectly classified as positive.
  • False negative (FN): The number of instances that were actually in the positive class but were incorrectly classified as negative.

The confusion matrix can be used to calculate a number of metrics that measure the performance of the classification model, such as accuracy, precision, recall, and F1 score.

Option A is incorrect because the confusion matrix is not used to visualize data. Option B is incorrect because the confusion matrix is not used to build predictive models. Option C is incorrect because the confusion matrix is not used to summarize data.

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