codesignal: Three Sections, Strict Time Constraints
The test consisted of 15 questions across three sections, with a total duration of 70 minutes:
Single-table analysis (7 questions): Focused on analyzing a single CSV file.
Multi-table analysis (7 questions): Required analyzing four CSV files with cross-table relationships.
SQL question (1 question): A single SQL query that carried significant weight in the final score.
The test broadly assessed core data analysis skills, including data slicing, aggregation, and SQL queries. While the technical difficulty was manageable, the primary challenges were time constraints, reading comprehension, and logical reasoning.