📊 Pandas
Q. Which pandas method returns the cumulative sum over a DataFrame or Series?
  • (A) cumsum()
  • (B) sum()
  • (C) cumprod()
  • (D) cummulative()
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✅ Correct Answer: (A) cumsum()

Explanation: The cumsum() method returns a cumulative sum of the elements along a DataFrame axis or a Series.

Explanation by: Sikhar Chaudhary
The cumsum() method returns a cumulative sum of the elements along a DataFrame axis or a Series.

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