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Data Science Coding Course
Categorizing Interview Questions
How does the data science coding interview work?
Course prerequisites and material to build the foundations
Recurring themes - Growth metrics
Recurring themes - Percentile, top X, or ranking
Recurring themes - Dealing with dates
Recurring themes - Threshold-based metrics
Recurring themes - Bidirectional connections between users
Recurring themes - When does code optimization actually matter in interviews?
Specific job interview advice
Coding questions with solutions
A framework to solve them all
Calculate user churn
Create user sessions
Subscription upgrades
Identify fraudulent advertisers
Total messages exchanged
User segmentation
Ranking users within groups
Calculate percentile
A specific approach for the median
Time delta between consecutive events
Find the first power user
Calculate total and running values
Final recommendations on SQL-like questions
Probability Coding Questions
Overview of probability coding questions
Calculate the expected number
Calculate the probability of winning a game
Teach online with
Identify fraudulent advertisers
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