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

1. Which file formats are commonly used for hierarchical or nested data structures in data acquisition?
(Choose two)

A) TSV
B) XML
C) CSV
D) JSON

2. When analyzing a dataset, which of the following functions would best help detect skewness or asymmetry in the data distribution?

A) mean()
B) std()
C) skew()
D) sum()

3. When performing bootstrapping on a dataset with 500 observations, what is a typical procedure?

A) Generating multiple datasets of the same size by randomly sampling with replacement
B) Scaling all values between 0 and 1 before resampling
C) Drawing one sample and calculating the mean only once
D) Creating samples by removing all duplicates

4. Which element is essential to justify a conclusion drawn from a dataset?

A) The origin of the dataset
B) Logical reasoning and supported metrics
C) File format of the source data
D) The use of color in plots

5. Which method is used after grouping a DataFrame to compute the average value for each group in a specific column?

A) groupby().mean()
B) groupby().max()
C) groupby().count()
D) groupby().aggregate()

Solutions: