최신Python Institute Certified Associate Data Analyst with Python (PCAD-31-02) - PCAD-31-02무료샘플문제

A. Returns True if all values in 'Age' are not NULL

B. Returns True if all values in 'Age' are NULL

C. Returns the number of NULL values in 'Age'

D. Returns True if at least one value in 'Age' is not NULL

A. openpyxl

B. csv

C. matplotlib

D. sqlite3

A. To ensure the data is clean, consistent, and suitable for modeling

B. To minimize the number of data points

C. To compress datasets for storage efficiency

D. To obscure sensitive information

A. Multiplying all missing values by zero

B. Replacing with text labels

C. Dropping all columns

D. Filling with the mean or median

A. Using assertions to enforce domain-specific rules

B. Sorting columns alphabetically

C. Defining and enforcing schema constraints

D. Automatically converting all text to uppercase

A. Elastic scalability

B. Physical proximity to user machines

C. Requires dedicated local hardware

D. High availability and redundancy

A. To convert strings into numeric values

B. To prevent features with larger scales from dominating distance calculations

C. To make all features interpretable as binary values

D. To compress all values into integers