No questions as the interview did not proceed beyond the coding test and as a result of not attempting the coding test the interview was stopped.
Cientista Ii Interview Questions
101 cientista ii interview questions shared by candidates
SQL, behavioral questions, case studies
What are the main factors when setting up an A/B test
Details: 2 SQL questions involving 3 different tables in a database: Table 1 contained subscription payment data by `subscriber_id` and `date` (renewal data, new subscription date), Table 2 contained subscriber personal details (gender, age, location, etc), Table 3 contained stream details by subscriber_id (subscriber_id, content_id, seconds streamed, timestamp, content_title). Question 1: find number of daily active subscriptions in 2019. Question 2: find number of male subscribers who watched at least 3 unique titles in August, being careful not to count titles that were streamed for less than 3 seconds.
- 1 Python question: build a class that takes an array as input, and define a function that tkaes
1. What is multicollinearity? 2. How can you detect Multicollinearity between variables? 3. How would you eliminate multicollinearity in data for use in a model?
PCA for numerical data and gone through the task.
Moderate level questions on the decisions to apply a particular ML algorithm on a dataset, (What they're looking for is a reasoning that factors in everything like inference time, results examinability(XAI or SHAP) and not just what algorithm will be the most accurate on a dataset. )
SQL: 7 day retention rate for each date - if a user was active on day 1 and on day 8 then consider them retained, ignoring anything in the middle
My experience was with bulk and especially scRNAseq. So we talked mostly single cell sequencing. We also talked regularisation and bayesian stats. Screening interview was very basic with few intro stats questions. Nothing to worry about. Coding interview was very basic (i was shocked when i was told nobody had finished it on time). The old guy was very nice and respectful. Loved the guy
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