How to use the Data science Interview Flashcards
- 1. Choose topicsPick one topic or all of them, a round size, and whether to skip cards you already know.
- 2. Flip and gradeRead the question, answer aloud, then reveal the answer and mark it known or still learning.
- 3. Review your resultsMissed cards come back later in the round. At the end see your score by topic and download the cards to revise.
What the deck covers
This deck covers the full life cycle that data science interviews probe, from probability to monitoring a model in production. The 22 cards are grouped into 11 topics: Basics, Statistics, Data, Features, Modelling, Evaluation, Python, Experiments, Deployment, Communication, Big data. Answers are short on purpose: one or two sentences you can say out loud, which you then back up with an example from your own projects.
A card from the deck
Q: What is data leakage?
A: When information from outside the training data, such as the target or future values, sneaks into features. The model looks great in testing and fails in real use.
Leakage is a favourite because it's easy to miss. Give an example, such as using a 'cancelled' flag to predict cancellations.
How to study with it
- For each metric card, think of a project where you'd pick that metric and why.
- Be ready to explain one model to a non-technical person in under a minute.
- In the Data science deck, cards you mark "still learning" come back three cards later in the same round, and the results screen lists them so you can download a revision sheet.
More questions from this deck
Other Data science questions you'll meet include:
- Describe the data science life cycle.
- What is a confidence interval?
- Why split data into train, validation and test sets?
- Precision vs recall?
- How do you explain a model to a business audience?
Frequently asked questions
How is this different from the ML deck?
This deck leans on statistics, data and experiments; the machine learning deck goes deeper into algorithms.
Is deep learning covered?
Only lightly. See the machine learning flashcards.
Are the Data science interview flashcards free?
Yes. You can flip through every card of the Data science interview flashcards without signing up. When you open your results for the first time, we ask once for your name and WhatsApp number; after that the Data science interview flashcards and every other Uncodemy tool open straight away.