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Python Institute PCAD-31-02 Exam Syllabus Topics:

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

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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions (Q59-Q64):

NEW QUESTION # 59
What is the most appropriate way to ensure that a column used as a foreign key contains only valid references to a parent DataFrame in Pandas?

A. Use df.sort_values() to sort both columns before merging
B. Use df.merge() with how='outer'
C. Use .isin() to compare the foreign key column against the parent key column
D. Use df.dropna() on the foreign key column

Answer: C

NEW QUESTION # 60
Which actions are considered best practices when managing datasets in Python using pandas?
(Choose two)

A. Replace missing values with hardcoded zeros without analysis
B. Use .describe() for summary statistics
C. Always convert all columns to strings
D. Use .info() to understand dataset structure

Answer: B,D

NEW QUESTION # 61
Which type of regression is most appropriate when the response variable is categorical, such as predicting customer churn (Yes/No)?

A. Decision tree regression
B. Linear regression
C. Logistic regression
D. Polynomial regression

Answer: C

NEW QUESTION # 62
Which practices are typically part of the data integration process?
(Choose two)

A. Neural network training
B. Schema alignment
C. Format standardization
D. Data encryption

Answer: B,C

NEW QUESTION # 63
Which of the following statistical measures are considered measures of central tendency?
(Choose two)

A. Interquartile range
B. Mean
C. Mode
D. Variance

Answer: B,C

NEW QUESTION # 64
......

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