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9.6k Questions 505 Companies08.05.2026
Showing 20 results
Role
Roblox logo
Roblox
Medium
Data Scientist

Implement Python Function for Statistical Test P-Values

Scenario You need a utility that calculates p-values for one-sided and two-sided statistical tests. Question Write a Python function compute_p_value(s...

Coding & Algorithms
14
0
47 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

Analyze Recent Calling Behavior in France Using SQL

CALLS +---------+---------+---------------------+-------------------+----------+ | call_id | user_id | call_start_time | participant_cnt | is_vi...

Data Manipulation (SQL/Python)
68
0
184 people solved
Jul 12, 2025
Coinbase logo
Coinbase
Medium
Data Scientist

Solve Aptitude Test: Logical, Numerical, Verbal Reasoning

Scenario Pre-employment aptitude screen assessing logical, numerical and verbal reasoning within a strict time limit Question You have 15 minutes to s...

Coding & Algorithms
96
0
288 people solved
Jul 12, 2025
Meta logo
Meta
Hard
Data Scientist

Impact of parents joining Facebook on teen engagement

Parental Presence and Teen Engagement on Facebook Facebook's teen audience overlaps increasingly with parents, who may friend their children, comment ...

Analytics & Experimentation
66
1
133 people solved
Jul 12, 2025
TikTok logo
TikTok
Medium
Data Scientist

Optimize Job Routing in Parallel Machine Scheduling

Scenario In the Production Factory game, jobs with varying processing times arrive and must be routed through two parallel machines to minimize total ...

Coding & Algorithms
23
0
44 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

Analyze VR App Usage and Engagement Metrics

vr_usage +---------+------------+---------+------------+----------+ | user_id | date | app_id | session_id | duration | +---------+------------...

Data Manipulation (SQL/Python)
49
0
5 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Data Scientist

Explore Subscription Patterns and Status Transitions with SQL/Pandas

subscriptions +-----------------+---------+-------------+ | subscription_id | status | status_date | +-----------------+---------+-------------+ | 10...

Data Manipulation (SQL/Python)
67
0
7 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

Design SQL Query for Shop Visibility and User Activity Metrics

SHOP_VISIBILITY +----------+---------+------------+------------+-------------+--------------+ | user_id | shop_id | event_date | is_visible | signup_...

Data Manipulation (SQL/Python)
78
0
180 people solved
Jul 12, 2025
PayPal logo
PayPal
Medium
Data Scientist

Describe Leading Without Authority in Data Management

Behavioral Interview: Leading Without Authority in Data Management You will be assessed on cultural fit and how you operate in ambiguous, messy data e...

Behavioral & Leadership
30
0
75 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Business Intelligence Engineer

Calculate Rolling 7-Day Sum of Answers by Device

ANSWERS +------------+--------+---------+ | date | device | answers | +------------+--------+---------+ | 2019-01-01 | echo | 10 | | 2019...

Data Manipulation (SQL/Python)
11
0
41 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

Calculate Total Interactions for Each Product

Interactions +----------+-----------+------------+--------------+ | buyer_id | seller_id | product_id | interactions | +----------+-----------+-------...

Data Manipulation (SQL/Python)
56
0
181 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Business Intelligence Engineer

Find Top Three Books by City in Recent Months

BOOK_SALES +------+--------+------------+------------+ | city | asin | sale_date | units_sold | +------+--------+------------+------------+ | NYC ...

Data Manipulation (SQL/Python)
4
0
20 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

Analyze Group Call Adoption Using SQL Queries

CALL_LOGS | call_id | user_id | call_start | call_end | is_group_call | participant_cnt | | 101 | 12 | 2023-08-01 10:00...

Data Manipulation (SQL/Python)
153
1
246 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Business Intelligence Engineer

Count Customers Buying Both 'Kindle' and 'Alexa'

ITEMS +---------+-----------+ | ITEM_ID | ITEM_NAME | +---------+-----------+ | 101 | Kindle | | 202 | Alexa | | 303 | Fire TV | ...

Data Manipulation (SQL/Python)
12
0
24 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Business Intelligence Engineer

Identify Customers Purchasing Every Product in Catalog

X_PURCHASES +-------------+---------+ | customer_id | pro_key | +-------------+---------+ | 1 | A | | 1 | B | | 2 ...

Data Manipulation (SQL/Python)
4
0
14 people solved
Jul 12, 2025
Snapchat logo
Snapchat
Medium
Data Scientist

Monitor Friend-Request System for Quality and Abuse

Friendship +--------------+-------------+---------------------+---------------------+ | requester_id | approver_id | request_ts | approval_ts...

Data Manipulation (SQL/Python)
111
1
350 people solved
Jul 12, 2025
Meta logo
Meta
Easy
Data Scientist

Expected impressions per user under random assignment

Random Assignment of Ad Impressions Across Users In an A/B experiment, Y ad impressions are served uniformly at random across X distinct users. Each i...

Analytics & Experimentation
14
0
31 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Data Scientist

Consolidate and Rank Global Salaries in USD

employees_us +---------+----------+--------+---------+ | emp_id | name | salary | country | +---------+----------+--------+---------+ | 1 |...

Data Manipulation (SQL/Python)
49
0
8 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Business Intelligence Engineer

Analyze Seller Compliance and Customer Purchase Patterns

SELLER_STATUS +-----------+------------+-----------+ | seller_id | date | status | +-----------+------------+-----------+ | 1 |2019-0...

Data Manipulation (SQL/Python)
5
0
18 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

Expected round of first selection in repeated sampling

Random Perk Selection: Expected First Round There are 1,000 employees. Each round, 10 distinct employees are selected at random for a perk. No one can...

Analytics & Experimentation
13
0
36 people solved
Jul 12, 2025