Choose the correct option from the following about the effect of increase in the cut-off value of a logistic regression model? The True Positives will decrease, and the True Negatives will increase. The change in cut-off should have no effect on the number of true positives and true negatives of the model, if we do not change the variables in the fitted logistic regression model. Both False Negatives and True Negatives will decrease. The False Positives will increase, and the False Negatives will decrease.

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16-12-2022
Mathematics

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Choose the correct option from the following about the effect of increase in the cut-off value of a logistic regression model? The True Positives will decrease, and the True Negatives will increase. The change in cut-off should have no effect on the number of true positives and true negatives of the model, if we do not change the variables in the fitted logistic regression model. Both False Negatives and True Negatives will decrease. The False Positives will increase, and the False Negatives will decrease.

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abhinavjh321 abhinavjh321 · Answer 1 · 2022-12-20T22:59:38-05:00

There will be a rise in false positives and a fall in false negatives.This is because the true positives and true negatives are determined by the values of the variables in the logistic regression model.

When the cut-off value is increased, the False Positives will increase, meaning that more observations will be incorrectly classified as positives. The False Negatives will decrease, meaning that fewer observations will be incorrectly classified as negatives. At the same time, the True Positives and True Negatives will remain unchanged, as long as the variables in the fitted logistic regression model remain the same.When the cut-off value is increased, the logistic regression model will be more stringent in its classification of observations. This means that the model will classify more observations as false positives (incorrectly classifying them as positives) and fewer as false negatives (incorrectly classifying them as negatives). On the other hand, the model will not be affected by the change in cut-off value when it comes to true positives and true negatives. This is because the true positives and true negatives are determined by the values of the variables in the logistic regression model, which remain unchanged when the cut-off value is changed.

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