Still confused about p-values? This explanation fixes it in under 40 seconds. Save this. Youโll need it for interviews.
Still confused about p-values?
This explanation fixes it in under 40 seconds.
Save this. Youโll need it for interviews.
DataInterview
active · last success 2026-06-19 23:50
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Try this interview question ๐ ๐๐ผ๐ฑ๐ฒ ๐๐ญ-๐ฆ๐ฐ๐ผ๐ฟ๐ฒ ๐๐๐ถ๐ป๐ด ๐ก๐๐บ๐ฝ๐ ๐ฏ ๐๐ผ๐ฑ๐ถ๐ป๐ด ๐ง๐ถ๐ฝ๐ (1) Clarify the problem (2) Consider the constraint (3) Solve (4) Explain the solution out loud ๐ Ace interviews on datainterview.com #DataScience #MachineLearning #Interviews #NumPy #Metrics #MLE #AI
Try this interview question ๐ ๐๐ผ๐ฑ๐ฒ ๐๐ญ-๐ฆ๐ฐ๐ผ๐ฟ๐ฒ ๐๐๐ถ๐ป๐ด ๐ก๐๐บ๐ฝ๐ ๐ฏ ๐๐ผ๐ฑ๐ถ๐ป๐ด ๐ง๐ถ๐ฝ๐ (1) Clarify the problem (2) Consider the constraint (3) Solve (4) Explain the solution out loud ๐ Ace interviews on datainterview.com #DataScience #MachineLearning #Interviews #NumPy #Metrics #MLE #AI -
Land top Data and AI roles on ๐ https://www.datainterview.com Ready to ACE Pandas Coding Interview? In this video, I walk you through a Pandas data manipulation question commonly asked in interviews for Data Analyst, Data Scientist, and Data Engineering roles. Watch this...
Land top Data and AI roles on ๐ https://www.datainterview.com Ready to ACE Pandas Coding Interview? In this video, I walk you through a Pandas data manipulation question commonly asked in interviews for Data Analyst, Data Scientist, and Data Engineering roles. Watch this video to learn concepts and frameworks. โณ ๐ง๐ถ๐บ๐ฒ๐น๐ถ๐ป๐ฒ 00:00 Problem Statement & Requirements 01:34 Reviewing Input Tables 02:51 Converting Seconds to Minutes 03:42 Filtering Monetized vs Non-Monetized Videos 05:28 Merging DataFrames & Adding Suffixes 06:55 Enforcing Publish-Order Condition 07:58 Extracting Qualifying User IDs 08:27 Mapping Users to Emails & Sorting 09:20 Submission & Wrap-Up ----------------------------------------------------------------------------------- ๐๐ฐ๐ฒ ๐๐ผ๐๐ฟ ๐ถ๐ป๐๐ฒ๐ฟ๐๐ถ๐ฒ๐๐ ๐ ๐๐ผ๐ถ๐ป ๐๐ฆ ๐๐ป๐๐ฒ๐ฟ๐๐ถ๐ฒ๐ ๐๐ผ๐ผ๐๐ฐ๐ฎ๐บ๐ฝ: https://www.datainterview.com/bootcamp/ds ๐ ๐๐ผ๐ถ๐ป ๐ ๐๐ ๐๐ป๐๐ฒ๐ฟ๐๐ถ๐ฒ๐ ๐๐ผ๐ผ๐๐ฐ๐ฎ๐บ๐ฝ: https://www.datainterview.com/bootcamp/mle ๐ ๐๐ ๐ง๐ฒ๐๐๐ถ๐ป๐ด ๐๐ผ๐๐ฟ๐๐ฒ: https://www.datainterview.com/courses/ab-testing-interview ๐ ๐ฃ๐๐๐ต๐ผ๐ป ๐๐ผ๐ฑ๐ฒ: https://www.datainterview.com/coding ----------------------------------------------------------------------------------- ๐๐ผ๐น๐น๐ผ๐๐ LinkedIn: https://www.linkedin.com/in/danleedata/ IG: / datainterview X: https://x.com/datainterview Email: contact@datainterview.com -
Land top Data and AI roles on ๐ https://www.datainterview.com Ready to ACE Data Scientist Coding Interview? A former Google Engineer provides detailed steps to calculate the Pearson Correlation using vanilla Python. Watch this video to learn concepts and frameworks. โณ...
Land top Data and AI roles on ๐ https://www.datainterview.com Ready to ACE Data Scientist Coding Interview? A former Google Engineer provides detailed steps to calculate the Pearson Correlation using vanilla Python. Watch this video to learn concepts and frameworks. โณ ๐ง๐ถ๐บ๐ฒ๐น๐ถ๐ป๐ฒ 00:00 How to Design ChatGPT 01:34 Understanding Pearson Correlation 02:04 Setting up the Function 06:06 Calculating Means 07:20 Calculating Covariance 09:30 Calculating Standard Deviations 10:05 Calculating Pearson Correlation 11:14 Handling Edge Cases ----------------------------------------------------------------------------------- ๐๐ฐ๐ฒ ๐๐ผ๐๐ฟ ๐ถ๐ป๐๐ฒ๐ฟ๐๐ถ๐ฒ๐๐ ๐ ๐๐ผ๐ถ๐ป ๐๐ฆ ๐๐ป๐๐ฒ๐ฟ๐๐ถ๐ฒ๐ ๐๐ผ๐ผ๐๐ฐ๐ฎ๐บ๐ฝ: https://www.datainterview.com/bootcamp/ds ๐ ๐๐ผ๐ถ๐ป ๐ ๐๐ ๐๐ป๐๐ฒ๐ฟ๐๐ถ๐ฒ๐ ๐๐ผ๐ผ๐๐ฐ๐ฎ๐บ๐ฝ: https://www.datainterview.com/bootcamp/mle ๐ ๐๐ ๐ง๐ฒ๐๐๐ถ๐ป๐ด ๐๐ผ๐๐ฟ๐๐ฒ: https://www.datainterview.com/courses/ab-testing-interview ๐ ๐ฃ๐๐๐ต๐ผ๐ป ๐๐ผ๐ฑ๐ฒ: https://www.datainterview.com/coding ----------------------------------------------------------------------------------- ๐๐ผ๐น๐น๐ผ๐๐ LinkedIn: https://www.linkedin.com/in/danleedata/ IG: / datainterview X: https://x.com/datainterview Email: contact@datainterview.com -
Land top Data and AI roles on ๐ https://www.datainterview.com How to Design ChatGPT? Here's an ML/AI System Design question asked in ML and AI Engineer interviews. A typical system design interviews for AI/ML engineer role includes a 45-minute round, conducted by a Senior or...
Land top Data and AI roles on ๐ https://www.datainterview.com How to Design ChatGPT? Here's an ML/AI System Design question asked in ML and AI Engineer interviews. A typical system design interviews for AI/ML engineer role includes a 45-minute round, conducted by a Senior or Staff level IC. You are expected to (1) frame the problem, (2) provide architecture overview, (3) discuss components/concepts in deep dive. Watch this video to learn concepts and frameworks. โณ ๐ง๐ถ๐บ๐ฒ๐น๐ถ๐ป๐ฒ 00:00 How to Design ChatGPT 00:20 How to Gather Requirements 05:30 Architecture Overview 06:34 ReACT - Agent Logic 18:12 Model Training Large Language Model (LLM) 21:15 Model Evaluation 22:50 Scaling Model Inference 24:41 Chat Service Deployment on AWS ----------------------------------------------------------------------------------- ๐๐ฐ๐ฒ ๐๐ผ๐๐ฟ ๐ถ๐ป๐๐ฒ๐ฟ๐๐ถ๐ฒ๐๐ ๐ ๐๐ผ๐ถ๐ป ๐๐ฆ ๐๐ป๐๐ฒ๐ฟ๐๐ถ๐ฒ๐ ๐๐ผ๐ผ๐๐ฐ๐ฎ๐บ๐ฝ: datainterview.com/bootcamp/ds ๐ ๐๐ผ๐ถ๐ป ๐ ๐๐ ๐๐ป๐๐ฒ๐ฟ๐๐ถ๐ฒ๐ ๐๐ผ๐ผ๐๐ฐ๐ฎ๐บ๐ฝ: datainterview.com/bootcamp/mle ๐ ๐๐ ๐ง๐ฒ๐๐๐ถ๐ป๐ด ๐๐ผ๐๐ฟ๐๐ฒ: datainterview.com/courses/ab-testing-interview ๐ ๐ฃ๐๐๐ต๐ผ๐ป ๐๐ผ๐ฑ๐ฒ: datainterview.com/coding ----------------------------------------------------------------------------------- ๐๐ผ๐น๐น๐ผ๐๐ LinkedIn: linkedin.com/company/datainterview IG: http://instagram.com/datainterview X: https://x.com/datainterview Email: contact@datainterview.com -
Want to break into data roles in 2025? Here's a pro tip you want to follow.
Want to break into data roles in 2025? Here's a pro tip you want to follow. -
Land Your Dream Data Job ๐ with ๐ https://www.datainterview.com Do you have a technical interview lined up for the data scientist interview? Here's a 45-minute mock, technical screen conducted by a Sr. DS at a product company. The technical screen for most product-based roles...
Land Your Dream Data Job ๐ with ๐ https://www.datainterview.com Do you have a technical interview lined up for the data scientist interview? Here's a 45-minute mock, technical screen conducted by a Sr. DS at a product company. The technical screen for most product-based roles is usually 45 minutes with SQL questions and AB testing. ๐ Watch how the candidate approaches the interview questions. And, if you want the rest of the video (the feedback portion), visit https://www.datainterview.com What are the benefits of enrolling in the Premium content? ๐ โ๏ธ Learn from 30+ Hours of Video and Text-Based Courses created by interview experts who worked in top companies like Google and Meta! ๐ 200+ Actual Interview Questions + Detailed Solutions - Get practice questions seen in actual interviews with detailed solutions solved by engineers from top companies (e.g. Google & Meta) ๐ Cover Core Areas in Technical Interviews including AB testing, product sense, applied statistics, machine learning, business case, SQL, data science coding and much more! โญ Become an SQL Pro with Interactive Pad with 100 SQL questions, easy to hard-level questions asked in top companies + highly optimized solutions. ๐ฅ Watch Mock Interview Videos with real candidates and an interviewer at top companies. ๐ญ Join the Private Chat Group to practice interview questions with peers and instructors. And, network with peers for your next job! Join premium prep on ๐ https://www.datainterview.com/pricing -
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๐ Land Your Dream Data Job. Visit https://www.datainterview.com ๐ Join the Data Scientist Interview Bootcamp: https://www.datainterview.com/bootcamp/ds Do you have a technical interview lined up for the data scientist interview? Here's a 45-minute mock, technical screen conducted by a Sr. DS at a product company. The technical screen for most product-based roles is usually 45 minutes with SQL questions and AB testing. ๐ Watch how the candidate approaches the interview questions. And, if you want the rest of the video (the feedback portion), visit https://www.datainterview.com What are the benefits of enrolling in the Premium content? ๐ โ๏ธ Learn from 30+ Hours of Video and Text-Based Courses created by interview experts who worked in top companies like Google and Meta! ๐ 200+ Actual Interview Questions + Detailed Solutions - Get practice questions seen in actual interviews with detailed solutions solved by engineers from top companies (e.g. Google & Meta) ๐ Cover Core Areas in Technical Interviews including AB testing, product sense, applied statistics, machine learning, business case, SQL, data science coding and much more! โญ Become an SQL Pro with Interactive Pad with 100 SQL questions, easy to hard-level questions asked in top companies + highly optimized solutions. ๐ฅ Watch Mock Interview Videos with real candidates and an interviewer at top companies. ๐ญ Join the Private Chat Group to practice interview questions with peers and instructors. And, network with peers for your next job! Join premium prep on ๐ https://www.datainterview.com/pricing -
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๐ Ace Data Science & ML Engineer Interviews with https://www.datainterview.com/pricing ๐ Join the Data Scientist Interview Bootcamp: https://www.datainterview.com/bootcamp/ds What are the benefits of enrolling in the Premium content? ๐ โ๏ธ Learn from 30+ Hours of Video and...
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๐ Ace Data Science & ML Engineer Interviews with https://www.datainterview.com/pricing ๐ Join the Data Scientist Interview Bootcamp: https://www.datainterview.com/bootcamp/ds What are the benefits of enrolling in the Premium content? ๐ โ๏ธ Learn from 30+ Hours of Video and...
๐ Ace Data Science & ML Engineer Interviews with https://www.datainterview.com/pricing ๐ Join the Data Scientist Interview Bootcamp: https://www.datainterview.com/bootcamp/ds What are the benefits of enrolling in the Premium content? ๐ โ๏ธ Learn from 30+ Hours of Video and Text-Based Courses created by interview experts who worked in top companies like Google and Meta! ๐ 200+ Actual Interview Questions + Detailed Solutions - Get practice questions seen in actual interviews with detail solutions solved by engineers from top companies (e.g. Google & Meta) ๐ Cover Core Areas in Technical Interviews including AB testing, product sense, applied statistics, machine learning, business case, SQL, data science coding and much more! โญ Become an SQL Pro with Interactive Pad with 100 SQL questions, easy to hard-level questions asked in top companies + highly optimized solutions. ๐ฅ Watch Mock Interview Videos with real candidates and an interviewer at top companies. ๐ญ Join the Private Chat Group to practice interview questions with peers and instructors. And, network with peers for your next job! Join premium prep on ๐ https://www.datainterview.com/pricing -
๐ Looking for a comprehensive AB testing course? Visit https://www.datainterview.com/courses/ab-testing-interview/introduction ====== โ Details ====== ๐ค Struggling to figure out what to measure in AB testing? A former data scientist at Google explains how to choose the right...
๐ Looking for a comprehensive AB testing course? Visit https://www.datainterview.com/courses/ab-testing-interview/introduction ====== โ Details ====== ๐ค Struggling to figure out what to measure in AB testing? A former data scientist at Google explains how to choose the right metric best on the experimentation goal. Key elements covered are product breakdown, metric frameworks and metric hierarchy which are vital elements when considering what to measure in an AB test. Dan, the host, was a data scientist formerly at Google and PayPal. He launched https://datainterview.com/ to help candidates like you eliminate frustrations about the data science interview process and increase your success. As an interview coach, Dan helped several clients land their dream jobs as IC and managerial DS roles at top companies such as Google, Meta, Amazon and such. Message him at Dan@DataInterview.com for help! ๐ Make sure to hit the like, and check out https://datainterview.com/ ====== โฑ๏ธ Timestamps ====== 0:00 What do you measure in AB testing? 3:46 Product breakdown 5:12 Metric formula 6:17 Metric frameworks 9:33 Metric hierarchy 12:18 Amazon case study ====== ๐ Other Useful Contents ====== 1. Principles and Frameworks of Product Metrics | YouTube Case Study Link: https://medium.com/datainterview/principles-and-frameworks-of-product-metrics-youtube-case-study-ff63257a82d3 2. How to Crack the Data Scientist Case Interview Link: https://medium.com/datainterview/crack-the-data-scientist-case-interview-by-an-ex-google-data-scientist-f44da750cffe 3. How to Crack the Amazon Data Scientist Interview Link: https://medium.com/datainterview/crack-the-amazon-data-scientist-interviews-ex-faang-data-scientist-78189a5a689e ====== Connect ====== ๐ LinkedIn - https://www.linkedin.com/company/datainterview/ ๐ Medium - https://medium.com/datainterview -
๐ Looking for a comprehensive AB testing course? Visit https://datainterview.com/ ๐ Join the Data Scientist Interview Bootcamp: https://www.datainterview.com/bootcamp/ds ====== โ Details ====== ๐ค Ever wondered how to calculate the sample size in an AB test? A former data...
๐ Looking for a comprehensive AB testing course? Visit https://datainterview.com/ ๐ Join the Data Scientist Interview Bootcamp: https://www.datainterview.com/bootcamp/ds ====== โ Details ====== ๐ค Ever wondered how to calculate the sample size in an AB test? A former data scientist at Google how to calculate the sample size step-by-step. The lesson covers the formulas, parameters and exercises that should give you the intuition on how the sample size is calculated. Dan, the host, was a data scientist formerly at Google and PayPal. He launched https://datainterview.com/ to help candidates like you eliminate frustrations about the data science interview process and increase your success. As an interview coach, Dan helped several clients land their dream jobs as IC and managerial DS roles at top companies such as Google, Meta, Amazon and such. Message him at Dan@DataInterview.com for help! ๐ Make sure to hit the like, and check out https://datainterview.com/ ====== โฑ๏ธ Timestamps ====== 0:00 Sample Size Formula 2:16 Significance Level (Alpha) 7:15 Statistical Power (1 - Beta) 12:43 Variance 17:41 Demonstration ====== ๐ Other Useful Contents ====== 1. Principles and Frameworks of Product Metrics | YouTube Case Study Link: https://medium.com/datainterview/principles-and-frameworks-of-product-metrics-youtube-case-study-ff63257a82d3 2. How to Crack the Data Scientist Case Interview Link: https://medium.com/datainterview/crack-the-data-scientist-case-interview-by-an-ex-google-data-scientist-f44da750cffe 3. How to Crack the Amazon Data Scientist Interview Link: https://medium.com/datainterview/crack-the-amazon-data-scientist-interviews-ex-faang-data-scientist-78189a5a689e ====== Connect ====== ๐ LinkedIn - https://www.linkedin.com/company/datainterview/ ๐ Medium - https://medium.com/datainterview -
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๐ Prep SQL with https://www.datainterview.com/sqlpad ====== โ Details ====== Love it or hate it - solving the SQL question correctly with speed can make or break your interview success. That's why in this video, I share: ๐ Three tips that helped clients ace SQL rounds in...
๐ Prep SQL with https://www.datainterview.com/sqlpad ====== โ Details ====== Love it or hate it - solving the SQL question correctly with speed can make or break your interview success. That's why in this video, I share: ๐ Three tips that helped clients ace SQL rounds in MAANG companies ๐ Daetama - an SQL practice pad with 100 interview questions ๐ A walkthrough of an Airbnb SQL interview question โญ Daetama is a new DataInterview product that will allow you to practice code on a web browser. Get access to 100 FAANG-style SQL questions curated and solved by data scientists at Google and Meta. Start practicing your SQL here ๐ https://www.datainterview.com/sqlpad ๐ Looking for data science interview prep? Check out: https://datainterview.com/ ๐ Make sure to subscribe, like and share! ====== โฑ๏ธ Timestamps ====== 00:00 - How to prepare for data science SQL interview questions 00:33 - Tip #1 01:39 - Tip #2 03:19 - Tip #3 04:23 - Airbnb SQL question ====== ๐ Other Useful Contents ====== 1. How to Ace Product Metric Questions ๐ https://bit.ly/3xeCgOl 2. Cracking Data Science Business Cases ๐ https://bit.ly/3trCHDP 3. Crack the Amazon Data Scientist Interview ๐ https://bit.ly/3MyC6XJ ====== Connect ====== ๐ LinkedIn - https://www.linkedin.com/in/danleedata/ ๐ Medium - https://medium.com/datainterview - End of feed
