Python for Data Science Week 3 NPTEL Assignment Answers 2025

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✅ Subject: Python for Data Science
📅 Week: 3
🎯 Session: NPTEL 2025 July-October
🔗 Course Link: Click Here
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NPTEL Python for Data Science Week 3 Assignment Answers 2025

1. Which of the following is the correct approach to fill missing values in case of categorical variable?

• Mean
• median
• Mode
• None of the above

Answer : See Answers

2. Of the following set of statements, which of them can be used to extract the column Type as a separate dataframe?

• df_cars[[‘Type’]]
• df_cars.iloc[[:, 1]
• df_cars.loc[:, [‘Type’]]
• None of the above

Answer :

3. The method df_cars.describe() will give description of which of the following column?

• Car name
• Brand
• Price (in lakhs)
• All of the above

Answer :

4. Which pandas function is used to stack the dataframes vertically?

• pd.merge()
• pd.concat()
• join()
• None of the above

Answer :

5. Which of the following are libraries in Python?

• Pandas
• Matplotlib
• NumPy
• All of the above

Answer :

6. Which of the following variable have null values?

• ID
• Company
• Review Date
• Rating

Answer : See Answers

7. Which of the following countries have maximum locations of cocoa manufacturing companies?

• U.K.
• U.S.A.
• Canada
• France

Answer :

8. After checking the data summary, which feature requires a data conversion considering the data values held?

• Rating
• Review date
• Company
• Bean origin

Answer :

9. What is the maximum rating of chocolates?

• 1.00
• 5.00
• 3.18
• 4.00

Answer :

10. What will be the output of the following code?

• [bool, int, float, float, str]
• [str, int, float, float, str]
• [bool, int, float, int, str]
• [bool, int, int, float, str]

Answer :

11. What does df.info() provide?

• Summary of the DataFrame, including the number of non-null entries.
• The first 5 rows of the DataFrame
• The data types of the columns
• The correlation matrix of the DataFrame

Answer :

12. What will be the output of the following code?

• [1, 2]
• [1, 3, 5]
• [1, 2, 3, 4, 5]
• [5, 4, 3, 2, 1]

Answer : See Answers