Actual Class (from validation data) Estimated Probability of Record Belonging to Class “fraud" 0.95 fraud fraud 0.91 fraud 0.75 non-fraud fraud 0.67 0.61 non-fraud 0.46 fraud 0.42 non-fraud 0.25 non-fraud 0.09 non-fraud 0.04 Based on the above information, answer the following three questions: Question 3.1 `. What is the overall accuracy of your model, if the chosen probability threshold value is 0.5? Question 3.2 ). What probability threshold value should you choose, in order to have Precisionfraud = 100% for your model? (Explain.) What is the overall accuracy of your model in this case?

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A:

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