PCAD-31-02 Official Cert Guide & PCAD-31-02 PDF

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Python Institute PCAD-31-02 Exam Syllabus Topics:

Section	Weight	Objectives
Statistical Methods and Modeling
Data Acquisition and Pre-Processing	29.2%
Data Visualization and Communication
SQL and Data Management
Exploratory Data Analysis

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Python Institute PCAD-31-02 PDF - Authentic PCAD-31-02 Exam Questions

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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions (Q68-Q73):

NEW QUESTION # 68
What is the primary purpose of using annotations in a data visualization?

A. To enhance interactivity in static plots
B. To highlight important data points and provide contextual information
C. To ensure faster rendering in large datasets
D. To replace the need for axes

Answer: B

NEW QUESTION # 69
Which method is best suited to transform inconsistent entries such as "N/A", "missing", and empty strings into a standard missing value representation in a Pandas DataFrame?

A. df.sort_values()
B. df.dropna()
C. df.replace()
D. df.rename()

Answer: C

NEW QUESTION # 70
Which practices are essential to ensure a fair evaluation of a machine learning model's performance?
(Choose two)

A. Splitting data into training and test sets
B. Randomizing the test dataset labels
C. Using cross-validation to assess generalizability
D. Training on the entire dataset including test records

Answer: A,C

NEW QUESTION # 71
Which of the following correctly demonstrates the use of parameterized queries using Python's sqlite3 module?

A. cursor.execute("SELECT * FROM users WHERE id = ':id'", {'id': user_id})
B. cursor.execute("SELECT * FROM users WHERE id = ?", (user_id,))
C. cursor.execute("SELECT * FROM users WHERE id = " + user_id)
D. cursor.execute("SELECT * FROM users WHERE id = ?", user_id)

Answer: B

NEW QUESTION # 72
What is the best approach when comparing SQL NULL values with Python data during conditional checks?

A. Use == None directly in SQL queries
B. Use Python's None and SQL's IS NULL clause
C. Replace NULL with zero before importing
D. Convert all NULL to string before comparison

Answer: B

NEW QUESTION # 73
......

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