Machine Learning Practice · End Term · 21 Dec 2025 · September 2025 term

Question 3: What will typically happen if series_with_nans contains N…

Question 3

+2 marksOne correct option

What will typically happen if series_with_nans contains NaNs (null values) ?

1. A

   statsmodels will automatically impute NaNs and fit silently.

2. B

   fit() will raise an error or drop NaNs depending on the estimator; user should handle NaNs beforehand.

3. C

   NaNs are treated as zeros.

4. D

   The model will only use the NaN values to estimate variance.

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Correct answer

• B

  fit() will raise an error or drop NaNs depending on the estimator; user should handle NaNs beforehand.

Question 3 of 60 in the IIT Madras BS Machine Learning Practice (MLP) End Term paper sat on 21 Dec 2025, in the September 2025 term (Machine Learning Practice 18 Dec 25). It carries 2 marks.