SQL & Data Interview Questions

Practice the most common SQL, Statistics, ML, and Python questions asked in FAANG Data Science & Data Analyst interviews!

CompanyTitleCategoryDifficultyStatus
BCG Gamma icon

BCG Gamma

Precision/Recall Tradeoff

Machine LearningEasy
Uber icon

Uber

Many Metropolitan Areas

Premium🔒

Machine LearningEasy
McKinsey icon

McKinsey

Assumptions of Linear Regression

Machine LearningEasy
Facebook icon

Facebook

Bias-Variance Tradeoff

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Machine LearningMedium
Blackstone icon

Blackstone

Real Estate Modelling

Machine LearningMedium
Uber icon

Uber

Fraud Detection Metrics

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Machine LearningMedium
LinkedIn icon

LinkedIn

Connection Request Spam

Machine LearningMedium
Robinhood icon

Robinhood

Modeling User Churn

Machine LearningHard
Amazon icon

Amazon

Neural Networks Overfitting

Premium🔒

Machine LearningEasy
AQR icon

AQR

Correlated Predictors

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Machine LearningEasy
PWC icon

PWC

Gradient Boosting vs. Random Forests

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Machine LearningEasy
Point72 icon

Point72

Why Random Forest?

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Machine LearningEasy
Microsoft icon

Microsoft

Boosting Example

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Machine LearningEasy
Airbnb icon

Airbnb

Improve Logistic Regression

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Machine LearningEasy
Accenture icon

Accenture

Model Diagnostics

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Machine LearningEasy
Uber icon

Uber

Motivation For Cross-Validation

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Machine LearningMedium
Amazon icon

Amazon

Generative and Discriminative Models

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Machine LearningMedium
Microsoft icon

Microsoft

Information Gain and Entropy

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Machine LearningMedium
Google icon

Google

Identifying Synonyms

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Machine LearningMedium
Medtronic icon

Medtronic

PCA Ranges

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Machine LearningMedium
JPMorgan icon

JPMorgan

Separable Regression

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Machine LearningMedium
Uber icon

Uber

L1 and L2 Regularization

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Machine LearningMedium
Amazon icon

Amazon

Stochastic Gradient Descent

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Machine LearningMedium
Affirm icon

Affirm

Changing ROC Curve

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Machine LearningMedium
Citadel icon

Citadel

Gaussian Naive Bayes vs. Logistic Regression

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Machine LearningMedium
Salesforce icon

Salesforce

Lead Scoring Algorithm

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Machine LearningMedium
Amazon icon

Amazon

Convex Functions

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Machine LearningMedium
Spotify icon

Spotify

Designing Discover Weekly

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Machine LearningHard
IBM icon

IBM

Entropy of Univariate Gaussian Random Variable

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Machine LearningHard
TikTok icon

TikTok

Differentiability and Backprop

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Machine LearningHard

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Distinct and Unique Handling

23

Aggregate Functions

84

Set Operations

16

Data Type Conversion

29

Null Handling

7

Percentage Calculations

20

Array Functions

3

Ace the Data Science Interview

28

String Functions

5

Date-Time Functions

30

Control Flow Functions

1

User Behavior

14

Common Table Expressions (CTE) or Subquery

40

Window Functions

38

Data Generation Functions

1

Joins

12

Existence Check

9

Mathematical Functions

20

Conditional Expression

39

Arithmetic Operators

4

Top N Results

12

Conditional Logic

30

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