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

Question 16: An analyst wants to check whether the number of hours a …

Question 16

+5 marksNumerical answer

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.

Calculate the absolute value of Point Bi-serial correlation coefficient between the result and number of hours spent. Enter the answer correct to three decimal places.

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Correct answer: 0.047 (accepted within ±0.004)

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Question 16 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 5 marks.

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