Top 25
Prep plan
Updated weekly · Last refresh Oct 17

ICF Data Analyst Interview Questions

The questions to prepare for a ICF Data Analyst interview. Questions from real interview reports rank first. Updated daily.

25questions
~3htotal time
Track your progressSign up free to work through all 25 questions and resume where you left off.
Start practicing free →
1
SQL & Data ManipulationStart here. 6 questions + 3 drills · ~78 min
Join vs Union in AnalyticsEasy

Explain how JOIN combines columns across related tables while UNION stacks rows from compatible queries in analytics workflows.

JoinsData WranglingUnionsICF
Handling Missing and Dirty SQL DataMedium

Explain how to profile, clean, and standardize missing or dirty data before analysis.

Data WranglingCase WhenQualityICF
Missing Values and Nontechnical CommunicationMedium

Evaluates data preprocessing judgment and clarity of communication for non-technical stakeholders.

data cleaningCommunicationICF
Database Management ExperienceMedium

Assesses your database management knowledge and ability to support reliable analytics.

experiencedatabase managementICF
SQL Select, Join, Group ByMedium

Tests core SQL skills including joins, grouping, and result limiting.

aggregationJoinssqlICF
Optimizing Slow SQL QueriesHard

Tests your approach to diagnosing and improving SQL performance on large public sector data sets.

JoinsperformanceAggregationsICF
SQL ExperienceMedium
Practice
Practice drill

Aggregate approved employee hours by department, including departments without qualifying records.

experienceJoinsCase WhenNational IndemnityDayforceAvalara
SQL Self Joins and ExplodeMedium
Practice
Practice drill

Transform comma-separated employee tags, join employees to managers, and aggregate active direct reports by manager and tag.

pysparkaggregationJoinsTredence
SQL Scripting on the JobMedium
Practice
Practice drill

Demonstrate practical SQL experience by summarizing qualifying orders for every customer, including customers without matching orders.

experienceJoinsCase WhenSpectrum
2
Behavioral & Leadership18 questions · ~144 min
Ensuring Data Accuracy at ScaleEasy

Tests ownership of data quality at scale, including validation process, risk communication, and accuracy under operational pressure.

processattention to detailQualityICF
More Behavioral & Leadership questions with a free account
3
More topics1 question · ~8 min
The finish line: interview-readyComplete all 25 questions plus 3 hands-on drills to finish this plan.