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MLP · End Term · 31 Aug 2025 (Forenoon)

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 (Forenoon)

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. A1000
2. B100
3. C99
4. D999
Q2MCQ2 Marks·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
Q3MCQ2 Marks·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
5. E
Q4MCQ2 Marks·Choose one option
Key ↓
What is the primary function of the pandas.resample() method for a time series?
1. ATo convert a DataFrame to a series or vice versa.
2. BTo fill in missing values in the time series using various interpolation methods.
3. CTo change the frequency of the time series, such as converting daily data to monthly or monthly data to daily.
4. DTo perform statistical tests to check for stationarity in the time series.
Q5MCQ3 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q6MCQ3 Marks·Choose one option
Key ↓
1. A(i) – resize, (ii) – augment, (iii) – flatten, (iv) – grayscale
2. B(i) – grayscale, (ii) – flatten, (iii) – resize, (iv) – augment
3. C(i) – grayscale, (ii) – augment, (iii) – resize, (iv) – flatten
4. D(i) – grayscale, (ii) – resize, (iii) – flatten, (iv) – augment
Q7MCQ3 Marks·Choose one option
Key ↓
A time series with a clear upward trend and increasing variance over time is identified as non- stationary. Which two preprocessing steps are most likely required?
1. AMin-Max scaling and seasonal decomposition
2. BImputing missing values and differencing
3. CLog transformation and differencing
4. DStandardization and moving average smoothing
Q8MCQ1 Mark·Choose one option
Key ↓
1. A
2. B
3. C
4. D
5. E
Q9MCQ1 Mark·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
5. E
Q10MSQ3 Marks·Choose all correct options
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
5. E
Q11MSQ2 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 3 times Key ↓
1. A
2. B
3. C
4. D
Q13MSQ2 Marks·Choose all correct options
Key ↓
1. A
2. B
3. C
4. D
Q14MSQ2 Marks·Choose all correct options
Asked 2 times Key ↓
1. AIt helps determine the optimal number of clusters by plotting the number of clusters vs. inertia (within-cluster sum of squares).
2. BThe ”elbow point” is where adding more clusters yields a significantly larger reduction in inertia.
3. CThe ”elbow point” is where adding more clusters yields diminishing returns in reducing inertia.
4. DIt always produces a clear and unambiguous elbow point.
5. EIt can be visualized using a plot of number of clusters vs. distortion score.
Q15MSQ1 Mark·Choose all correct options
Key ↓
How to disable early stopping in SGDRegressor?
1. A
2. B
3. C
4. D
Q16NAT2 Marks·Write the number
Asked 2 times Key ↓
Your answer:
Q17NAT2 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 ↓
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 ↓
Your answer:
Q25NAT2 Marks·Write the number
Asked 4 times Key ↓
Your answer:
Q26NAT2 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

Q2B

Q3A

Q4C

Q5A

Q6D

Q7C

Q8E

Q9A

Q10A, B

Q11A, B, D

Q12A, B, C

Q13A, B, D

Q14A, C, E

Q15A, C

Q160.5

Q1711

Q18A, B

Q19A

Q20A, B, D

Q21D

Q22B, D

Q2390

Q240.97 to 0.99

Q250.77 to 0.79

Q263.8 to 4.1

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