PCAD-31-02 Top Exam Dumps & PCAD-31-02 Pass4sure Study Materials

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Python Institute PCAD-31-02 Exam Syllabus Topics:

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

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Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) Sample Questions (Q24-Q29):

NEW QUESTION # 24
Which metric is most appropriate for evaluating the accuracy of a classification model?

A. Precision
B. Mean squared error
C. Confusion matrix
D. R-squared

Answer: A

NEW QUESTION # 25
Which chart types are commonly used to represent relationships between two numerical variables in Python-based visualizations?
(choose two)
Response:

A. Histogram
B. Heatmap
C. Scatter plot
D. Line chart

Answer: B,C

NEW QUESTION # 26
What is one potential risk of dynamically constructing SQL queries using string concatenation in Python scripts?

A. Increased memory usage
B. Slower database performance
C. Missing foreign key constraints
D. Exposure to SQL injection attacks

Answer: D

NEW QUESTION # 27
Which method in the pandas library allows efficient loading of large datasets in chunks to conserve memory?

A. import_csv()
B. load_dataset()
C. read_csv(chunksize=...)
D. fetch_chunks()

Answer: C

NEW QUESTION # 28
What is a key assumption of linear regression that distinguishes it from logistic regression?

A. Output values must be binary
B. The relationship between predictors and the outcome is linear
C. Predictors must be independent
D. The target variable is unordered categorical

Answer: B

NEW QUESTION # 29
......

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