How do I approach Data Manipulation (SQL/Python) interview questions?

Data Manipulation (SQL/Python) questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master data manipulation (sql/python) interviews.

What difficulty level is this interview question?

This is a easy difficulty Data Manipulation (SQL/Python) question, commonly asked during Take-home Project rounds at IBM.

What role is this question designed for?

This question is commonly asked for Data Scientist candidates at IBM during technical interviews.

Write SQL to compute max and min marks

Last updated: Mar 29, 2026

Quick Overview

This question evaluates a candidate's ability to perform basic data aggregation in SQL, specifically computing summary statistics from a single table. It is commonly asked to assess competence in data manipulation and query result shaping within the Data Manipulation (SQL/Python) domain, focusing on practical application of SQL aggregation rather than purely conceptual theory.

IBM

Oct 3, 2025, 12:00 AM

Data Scientist

Take-home Project

Data Manipulation (SQL/Python)

Tables

`marks`

column	type	notes
student_id	INT	primary key
marks	INT	not null

Task

Write a SQL query that returns a single row with:

max_marks : the maximum value of marks
min_marks : the minimum value of marks

Output

A single row with columns (max_marks, min_marks).

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