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Sep 21 • 9 tweets • 4 min read
6 FREE resources to practice Data Science Interview Questions

A thread 🧵👇
1. Alexey Grigorev's (@Al_Grigor) Data Science Interviews GitHub repo:

github.com/alexeygrigorev…
2. The 9-Day #DataScience Interview Crash Course

(has 27 FAANG problems sent over 9 emails)

acethedatascienceinterview.com/#free-chapter
3. Chip Huyen's (@chipro) #ML Interview Book:

huyenchip.com/ml-interviews-…
4. DataLemur: Ace the #SQL Interview

Has 60+ SQL interview questions from FAANG.

All the hints + solutions are 100% free

(unlike LeetCode and HackerRank)

datalemur.com
5. This Reddit thread with 21 questions someone was asked when interviewing for a $120k entry-level Data Science job in Washington D.C:

(it has a really good comment section discussing interview prep!)

reddit.com/r/datascience/…
6. 40 Prob/Stat questions asked by FAANG:

nicksingh.com/posts/40-proba…
That's a wrap!

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Also @chipro would love to connect around ClayPot. I'm in the Same Data Influencers group chat as you on LinkedIn, where I have 100k followers.

Won't be able to come to the happy hour this Saturday tho but still wanna connect when I'm in the bay next!

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More from @NickSinghTech

Nick Singh | The Data Science Guy 📕 Profile picture
Sep 23
Google recently released an "Interview Warmup" tool, to help candidates who are applying to Data Analytics jobs at Google better prep for their technical interview.

Here's 15 Data Analytics Questions Google expects you to know:

(how many can you answer??)
1. Not all data or inputs for analysis arrive in perfect condition.

Explain some of the errors or problems you might look for as part of the data cleaning process.
2. Some large companies store data in data centers in multiple countries.

Why does it matter which countries your data is stored in?
Read 14 tweets
Nick Singh | The Data Science Guy 📕 Profile picture
Sep 15
Learn SQL in 30 days for FREE with these 5 amazing resources:

(be sure to bookmark this 30-Day SQL Roadmap)

A thread🧵👇
Week 1 🗓️

Work through the first 12 free interactive lessons on SQL Bolt.

This will teach you
○ SELECT
○ WHERE
○ JOINS
○ Aggregate Functions

Don't worry about the Update/Create/Alter table lessons - skip these!

sqlbolt.com
Week 2 🗓️

Work through the 38 short SQL tutorials on W3Schools.

This will cover similar material as SQL Bolt BUUUT

It's absolutely worth repeating these SQL concepts so that they'll sink into your brain 🧠

w3schools.com/sql/
Read 8 tweets
Nick Singh | The Data Science Guy 📕 Profile picture
Mar 31
Data Science is broad & confusing with so so much to explore. Here's an amazing map to guide your journey 🧵👇
Start by sailing around the Sea of 𝗣𝗿𝗼𝗯𝗮𝗯𝗶𝗹𝗶𝘁𝘆 & 𝗦𝘁𝗮𝘁𝗶𝘀𝘁𝗶𝗰𝘀, while also learning how to extract value and connect it to the business side. Then only drift towards the Bay of Computer Science and the choppy seas of MLOps!
For the uninitiated seafarer, only venture into deeper and stormier waters when you've mastered calmer and shallower ones🌊 𝗧𝗵𝗲𝗿𝗲 𝗯𝗲 𝗱𝗿𝗮𝗴𝗼𝗻𝘀 and rough waters around Deep Learning Point — dangerous for beginners, despite how accessible and alluring it seems!
Read 6 tweets
Nick Singh | The Data Science Guy 📕 Profile picture
Mar 5
HAPPY ~STATISTICS SATURDAY~

Here's 5 super ✨unique✨ Statistics resources you probably haven't seen before:
#1- Seeing Theory: this interactive visual introduction to statistics helps you understand concepts like frequentist inference, bayesian inference, and regression analysis in such a clever way

seeing-theory.brown.edu/frequentist-in…
#2 - StatQuest: free YouTube playlist, with some of the toughest concepts explained simply and visually.

TBH I needed the Maximum Likelihood video as a refresher!

youtube.com/playlist?list=…
Read 8 tweets
Nick Singh | The Data Science Guy 📕 Profile picture
Feb 19
Happy SQL Saturday! Here's 7 super unique SQL resources you probably haven't seen before:
#1 - PayPal / Braintree Take-Home Project: a real Data Analyst SQL interview challenge to test your skills!

github.com/AlexanderConne…
#2 - SchemaVerse: this space-based strategy game is implemented entirely within a Postgres DB — you compete against other players using raw SQL commands to command your fleet!

schemaverse.com/tutorial/tutor…
Read 9 tweets

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