You have a spreadsheet with values containing leading zeros (e.g., "001234"). What's the most effective way to preserve these zeros during Text-to-Columns?
Save as CSV before applying Text-to-Columns
Format cells as Text before using Text-to-Columns
Change the delimiter to semicolons
Manually change the affected cells back to numbers
What is the correct order of execution in a Python try-except-finally block if no exception occurs?
try → finally
try → except → finally
try only
finally → try
A data scientist needs to count non-null values in each column of a DataFrame. Which pandas method should they use?
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The IIT Madras BS Tools in Data Science (Tools in Data Science (TDS)) End Term paper sat on 13 Apr 2025, in the January 2025 term, set QDD3: 35 questions for 40 marks in 180 minutes. The first 3 questions are below. Sign in with Google — it is free — to see the whole paper with its answers and explanations, in learning mode or as a timed mock test.
| Feature | Tools in Data Science (TDS) End Term 13 Apr 2025 Set QDD3 at a glance |
|---|---|
| Term | January 2025 term |
| Subject | Tools in Data Science |
| Course code | BSSE2002 |
| Questions | 35 |
| Marks | 40 |
| Duration | 180 min |
| MCQ | 32 |
| MSQ | 3 |
| Official paper | IIT M DIPLOMA AN EXAM QDD3 13 Apr 2025 |
| Negative marking | No negative marking. |
| Updated |
