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Pandas DataFrame Operations Practice Exam

Test yourself under real exam conditions: 50 timed questions, 60 on the clock, pass mark 70%%. Instant score with a full review of everything you got wrong. Free — no account needed.

📝 50 questions · ⏱ 60 minutes · 🎯 Pass mark 70% · 🆓 Free, no signup
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Exam details

  • ✓50 questions drawn from 120 cards
  • ✓Countdown timer — auto-submits when time runs out
  • ✓Pass mark 70% (real certification threshold)
  • ✓Full review of wrong answers at the end
  • ✓No signup required — save your score with a free account

Sample Questions

5 shown

What is a Pandas DataFrame?

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A two-dimensional, size-mutable, tabular data structure with labeled axes (rows and columns), similar to a spreadsheet or SQL table.

What library provides DataFrame in Python?

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Pandas (import pandas as pd).

How do you create a DataFrame from a dictionary of lists?

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pd.DataFrame({'col1': [1, 2], 'col2': [3, 4]})

How do you create a DataFrame from a list of dictionaries?

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pd.DataFrame([{'a': 1}, {'a': 2, 'b': 3}]); missing keys become NaN.

How do you read a CSV file into a DataFrame?

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pd.read_csv('file.csv').

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