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

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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. Why might using a pie chart to represent category proportions be less effective than a bar chart?

A) Human perception is less accurate at judging angles than lengths
B) Pie charts display individual data points more clearly
C) Pie charts cannot be created using Seaborn
D) Bar charts are limited to one variable only

2. What is the correct SQL statement to permanently remove a table named customers from a database?

A) REMOVE TABLE customers;
B) TRUNCATE TABLE customers;
C) DROP TABLE customers;
D) DELETE TABLE customers;

3. Why is it important to use a test dataset separate from the training dataset when evaluating a machine learning model?

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

4. Which transformation method adjusts the mean of the dataset to 0 and the standard deviation to 1?

A) One-hot encoding
B) Z-score normalization
C) Min-max normalization
D) Log transformation

5. Which method is typically used in Pandas to check if a column contains only values within an expected range?

A) df.clip()
B) df.isin()
C) df.sort_values()
D) df.sample()

Solutions: