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Python Institute PCAD-31-02 Exam Syllabus Topics:

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

1. Which methods are typically used to assess relationships between variables in exploratory data analysis?
(Choose two)

A) Scatter plots
B) Box plots
C) Correlation matrix
D) Histogram analysis

2. What result will the following Pandas expression return: df['Age'].notnull().all()?

A) Returns the number of NULL values in 'Age'
B) Returns True if all values in 'Age' are NULL
C) Returns True if at least one value in 'Age' is not NULL
D) Returns True if all values in 'Age' are not NULL

3. 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.dropna() on the foreign key column
C) Use df.merge() with how='outer'
D) Use .isin() to compare the foreign key column against the parent key column

4. Which of the following practices improves clarity when combining visualizations and textual explanations in a report?

A) Repeat all numerical data in both the chart and text
B) Avoid summarizing the data verbally
C) Use visualizations alone without titles or captions
D) Include concise textual summaries that highlight the chart's message

5. Which of the following exceptions would most likely be raised if a string is directly converted to an integer in Python?

A) IOError
B) ValueError
C) RuntimeError
D) TypeError

Solutions: