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Business Analytics · Quiz 2 · 12 Apr 2026 · January 2026 term

Question 15: If the threshold is decreased to 0.5, which of the follo…

Question 15

+2 marksOne or more correct options

Dr. Burada is a cardiologist. He is trying to predict if the occurrence of a “Heart Attack” can be predicted using “Age”, “Resting bpm” and “Blood Cholesterol Level”. Accordingly, the data for 200 patients was collected and a logistic regression model was built (model coefficients are provided in Table-4). As Dr. Burada’s wife was running a sweets shop, he wanted to identify patients who were not prone to “Heart Attack” (so that he can sell them more oily snack items and get a name with the Home Minister). Hence, the target is “No Heart Attack=1” and “Heart Attack=0”. Table-5 gives the list of patients visiting the sweet shop. Dr.Burada needs to spend approximately 20 mins per Non-Heart Attack patient canvasing if he wants to convince them to buy snacks. Given this information, answer the given subquestions.

Dr. Burada is a cardiologist. He is trying to predict if the occurrence of a “Heart Attack” can be predicted using “Age”
Dr. Burada is a cardiologist. He is trying to predict if the occurrence of a “Heart Attack” can be predicted using “Age”

If the threshold is decreased to 0.5, which of the following is/are true? (choose all that is applicable)

Select all that apply.

  1. A

    Precision for predicting Y=1 will increase

  2. B

    Precision for predicting Y=1 will decrease

  3. C

    Recall for predicting Y=1 will increase

  4. D

    Recall for predicting Y=1 will decrease

  5. E

    Precision for predicting Y=0 will increase

  6. F

    Precision for predicting Y=0 will decrease

  7. G

    Recall for predicting Y=0 will increase

  8. H

    Recall for predicting Y=0 will decrease

  9. I

    Accuracy of the model will decrease

  10. J

    Accuracy of the model will increase

  11. K

    None of these

Show answer

Correct answers

  • B

    Precision for predicting Y=1 will decrease

  • F

    Precision for predicting Y=0 will decrease

  • H

    Recall for predicting Y=0 will decrease

  • I

    Accuracy of the model will decrease

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Question 15 of 18 in the IIT Madras BS Business Analytics (Business Analytics) Quiz 2 paper sat on 12 Apr 2026, in the January 2026 term (Business Analytics 06 Apr 26). It carries 2 marks.

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