Python Institute PCAD-31-02 Actual Free Exam Questions & Community Discussion
Why is min-max scaling applied before using algorithms like K-Nearest Neighbors or SVM?
Correct Answer: D
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Which methods can be used to validate data types and structure in a Pandas DataFrame?
(Choose two)
(Choose two)
Correct Answer: B,C
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How would you extract the last three rows of a DataFrame df using position-based indexing?
Correct Answer: B
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What is the primary role of the pandas library in the Python data science ecosystem?
Correct Answer: A
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What is the primary purpose of using a requirements.txt file in Python-based data projects?
Correct Answer: A
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What is the function of the melt() operation in Pandas when reshaping wide-format data?
Correct Answer: A
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Which of the following would most likely be classified as unstructured data?
Correct Answer: A
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Which of the following statements best describes the structural relationship between Pandas Series and DataFrames?
Correct Answer: B
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Which practices help ensure secure and effective execution of SQL queries in Python scripts?
(Choose all that apply)
(Choose all that apply)
Correct Answer: A,D
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