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Statistics for Data Science I · Qualifier · 16 Mar 2025 · January 2025 term

Question 17: An analyst wants to check whether the number of hours a …

Question 17

+1 markOne correct option

An analyst wants to check whether the number of hours a student spent in learning is related to their exam performance. She randomly selects 6 students from the top 15 students of the class and data for the same is tabulated in Table Q.2

Based on the given information, answer the subquestions.

Are the exam results of the selected students strongly influenced by the number of hours spent studying?

  1. A

    Yes, because the absolute value of Point Bi-serial coefficient is close to 1.

  2. B

    No, because the absolute value of Point Bi-serial coefficient is close to 1.

  3. C

    Yes, because the absolute value of Point Bi-serial coefficient is close to 0.

  4. D

    No, because the absolute value of Point Bi-serial coefficient is close to 0.

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Correct answer

  • D

    No, because the absolute value of Point Bi-serial coefficient is close to 0.

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Question 17 of 17 in the IIT Madras BS Statistics for Data Science I (Stats 1) Qualifier paper sat on 16 Mar 2025, in the January 2025 term (IIT M QUALIFIER AN EXAM QDQ1 16 Mar 2025). It carries 1 mark.

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