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Python Institute PCAD-31-02 Exam Syllabus Topics:

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

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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions (Q109-Q114):

NEW QUESTION # 109
Why is it important to use a test dataset separate from the training dataset when evaluating a machine learning model?

A. To ensure the loss function is minimized
B. To reduce the number of iterations during training
C. To evaluate the model's performance on unseen data
D. To optimize the model's training accuracy

Answer: C

NEW QUESTION # 110
When analyzing a dataset of customer ages, you calculate the mean, median, and mode. What does it indicate if all three values are approximately equal?

A. The dataset is uniformly distributed
B. The dataset has a normal distribution
C. The dataset contains outliers
D. The dataset is positively skewed

Answer: B

NEW QUESTION # 111
Which practices are typically part of the data integration process?
(Choose two)

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

Answer: A,D

NEW QUESTION # 112
Which of the following statements best describes the structural relationship between Pandas Series and DataFrames?

A. A DataFrame is a one-dimensional array of Series
B. A Series can only be created from a DataFrame
C. A Series contains multiple DataFrames
D. A DataFrame is a two-dimensional container of Series objects

Answer: D

NEW QUESTION # 113
Which of the following would most likely be classified as unstructured data?

A. Inventory levels in a spreadsheet
B. Normalized employee database in PostgreSQL
C. Collection of customer service audio recordings
D. Product ID and price list in a CSV

Answer: C

NEW QUESTION # 114
......

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