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Which of the following is the correct syntax to calculate the standard deviation of a numpy array named data?

easy📝 Conceptual Q3 of 15
NumPy - Aggregation Functions
Which of the following is the correct syntax to calculate the standard deviation of a numpy array named data?
Anp.std(data)
Bnp.std[data]
Cnp.std{data}
Dnp.std:data
Step-by-Step Solution
Solution:

  1. Step 1: Recall correct function call syntax

    Functions in numpy are called with parentheses and arguments inside, like np.std(data).

  2. Step 2: Identify incorrect syntax

    Square brackets, curly braces, or colons are not valid for function calls.

  3. Final Answer:

    np.std(data) -> Option A

  4. Quick Check:

    Function call syntax uses parentheses [OK]
Quick Trick: Use parentheses () to call numpy functions [OK]
Common Mistakes:
  • Using square brackets for function call
  • Using curly braces or colon instead of ()
  • Missing parentheses

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