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MLF · Quiz 2 · 3 Aug 2025 (Afternoon)

15 questions · 40 marks · 60 min

Answer key Take as mock

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Machine Learning Foundations

Quiz 2 · 3 Aug 2025 (Afternoon)

Official Paper

Examination Instructions & Guidelines

Solve on notebook/paper first before checking solutions.
MCQ: Exactly 1 option is correct. Negative marking applies.
MSQ: One or more options correct. Select all to score.
NAT: Numerical response. No negative marking.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

Q1MCQ2 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q2MCQ2 Marks·Choose one option
Asked 4 times Key ↓
1. AQ is positive definite.
2. BQ is positive semi-definite.
3. CQ is negative definite.
4. DQ is negative semi-definite.
5. ENone of these
Q3MCQ3 Marks·Choose one option
Asked 4 times Key ↓
1. AA is positive definite.
2. BA is positive semi-definite.
3. CA is negative definite.
4. DA is negative semi-definite.
Q4MCQ3 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q5MCQ3 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q6MCQ3 Marks·Choose one option
Asked 4 times Key ↓
1. A
2. B
3. C
4. D
Q7MSQ3 Marks·Choose all correct options
Asked 5 times Key ↓
1. AA is a Hermitian matrix.
2. BA is a unitary matrix.
3. CAll eigenvalues of A are not real.
4. DEigenvectors corresponding to different eigenvalues of A are not orthogonal.
Q8MSQ3 Marks·Choose all correct options
Key ↓
1. A
2. B
3. C
4. D
Q9NAT3 Marks·Write the number
Key ↓
Your answer:
Read the passage below, then answer Q10–Q12
Based on the above data, answer the given subquestions.
Q10MCQ3 Marks·Choose one option
Key ↓
Which of the following options is/are true?
1. A
2. B
3. C
4. D
Q11MCQ3 Marks·Choose one option
Key ↓
Which of the following options is/are true ?
1. A
2. B
3. C
4. D
Q12MCQ2 Marks·Choose one option
Key ↓
Which of the following options is true?
1. A
2. B
3. C
4. D
Read the passage below, then answer Q13–Q15
Based on the above data, answer the given subquestions.
Q13MCQ2 Marks·Choose one option
Key ↓
The sample covariance matrix C for the given dataset is
1. A
2. B
3. C
4. D
Q14MCQ2 Marks·Choose one option
Key ↓
The eigenvalues of the covariance matrix are
1. A
2. B
3. C
4. D
Q15MCQ3 Marks·Choose one option
Key ↓
The first principal component is
1. A
2. B
3. C
4. D

Official Key

Master Answer Key & Explanations

Official answer keys from IIT Madras BS past papers. Click any question to review.

Reveal Key

Q1C

Q2E

Q3A

Q4B

Q5C

Q6A

Q7C, D

Q8A, B, C

Q93.45 to 4.05

Q10C

Q11A

Q12C

Q13A

Q14A

Q15C

Questions and answer keys are reproduced from the official IIT Madras BS papers. BTechi is not affiliated with IIT Madras.