BTechibtechi.in
Loading Loading
Free IIT Madras BS notes, PYQs and mock tests at btechi.in

MLP · End Term · 31 Aug 2025 (Afternoon)

26 questions · 50 marks · 90 min

Answer key Take as mock

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Machine Learning Practice

End Term · 31 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
Asked 2 times Key ↓
1. A10
2. B50
3. C100
4. D500
Q2MCQ2 Marks·Choose one option
Key ↓
1. ASet ‘warm start=True’
2. BCombine training data from different training sessions
3. CSet ‘retain parameters=True’
4. DThis problem can not be solved.
Q3MCQ2 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q4MCQ2 Marks·Choose one option
Key ↓
1. A(200, 200, 3)
2. B(40000, )
3. C(200, 200, 1)
4. D(40000, 3)
Q5MCQ2 Marks·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
5. E
Q6MCQ2 Marks·Choose one option
Key ↓
Which of the following statements about the Augmented Dickey-Fuller (ADF) test is correct?
1. AThe test is used to detect seasonality in a time series
2. BA low p-value (e.g., < 0.05) indicates the time series is non-stationary
3. CThe test’s null hypothesis is that the time series is stationary
4. DA low p-value (e.g., < 0.05) indicates the time series is stationary
Q7MCQ1 Mark·Choose one option
Key ↓
How to change the loss function in SGDRegressor to Huber loss?
1. A
2. B
3. C
4. D
Q8MCQ1 Mark·Choose one option
Asked 2 times Key ↓
1. Aliblinear
2. Blbfgs
3. Csaga
4. Dnewton-cg
Q9MCQ1 Mark·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
5. E
Q10MCQ3 Marks·Choose one option
Key ↓
Which of the following best describes the components of a time series in a classical multiplicative decomposition model?
1. AThe series is a product of a trend component and an error component only
2. BThe series is a sum of a trend component, a seasonal component, and a cyclical component
3. CThe series is a product of a trend component, a seasonal component, and an error component
4. DThe series is a sum of a trend component, a seasonal component, and a error component
Q11MSQ3 Marks·Choose all correct options
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
5. E
Q12MSQ2 Marks·Choose all correct options
Asked 2 times Key ↓
1. ASaves computation time by reusing results of expensive transformations when inputs and parameters have not changed.
2. BHelps speed up repeated runs of cross-validation involving the same transformation steps.
3. CReduces CPU usage by running transformations in parallel threads automatically.
4. DImproves efficiency in hyperparameter search by avoiding redundant computations in pipeline steps.
5. EGuarantees better generalization performance on the test set.
Q13MSQ2 Marks·Choose all correct options
Asked 3 times Key ↓
1. A
2. B
3. C
4. D
Q14MSQ2 Marks·Choose all correct options
Key ↓
A medical diagnosis model is used to detect a rare disease that occurs in 0.5% of the population. A model is trained on this data, which of the following evaluation metrics are suitable for measuring effectiveness of this model:
1. Aaccuracy
2. Bprecision
3. Crecall
4. DF-1 score
Q15MSQ2 Marks·Choose all correct options
Asked 2 times Key ↓
1. AThe elbow method involves plotting the number of clusters against the inertia and identifying a point where the decrease in inertia slows down.
2. BThe elbow point represents the cluster count beyond which additional clusters do not significantly improve the model fit.
3. CThe metric used in the elbow method is the silhouette score.
4. DThe elbow point is always the smallest number of clusters in the plot.
5. EThe elbow method may sometimes be inconclusive if no clear bend is visible in the curve.
Q16NAT3 Marks·Write the number
Key ↓
Your answer:
Q17NAT3 Marks·Write the number
Asked 2 times Key ↓
Your answer:
Read the passage below, then answer Q18–Q20
Based on the above data, answer the given subquestions.
Q18MSQ1 Mark·Choose all correct options
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
Q19MCQ2 Marks·Choose one option
Asked 3 times Key ↓
1. A
2. B
3. C
4. D
Q20MSQ2 Marks·Choose all correct options
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
Read the passage below, then answer Q21–Q23
Based on the above data, answer the given subquestions.
Q21MCQ2 Marks·Choose one option
Asked 2 times Key ↓
select the appropriate values for A and B in the loss parameter to ensure that all model fits execute successfully.
1. A
2. B
3. C
4. D
Q22MSQ2 Marks·Choose all correct options
Asked 3 times Key ↓
1. A
2. B
3. C
4. D
Q23NAT1 Mark·Write the number
Asked 2 times Key ↓
Your answer:
Read the passage below, then answer Q24–Q26
Based on the above data, answer the given subquestions.
Q24NAT1 Mark·Write the number
Asked 4 times Key ↓
Calculate and enter the value of X (truncated to two decimal places).
Your answer:
Q25NAT1 Mark·Write the number
Asked 4 times Key ↓
Calculate and enter the value of Y (truncated to two decimal places).
Your answer:
Q26NAT3 Marks·Write the number
Asked 2 times Key ↓
Your answer:

Official Key

Master Answer Key & Explanations

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

Reveal Key

Q1A

Q2A

Q3A

Q4B

Q5A

Q6D

Q7A

Q8C

Q9A

Q10C

Q11A, B

Q12A, B, D

Q13A, B, C

Q14B, C, D

Q15A, B, E

Q16-12.5

Q1710

Q18A, C

Q19A

Q20A, C

Q21D

Q22B, D

Q2372

Q240.97 to 0.99

Q250.81 to 0.83

Q264.1 to 4.3

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