Difference between Holt Winter vs ARIMA? Time Series Decomposition used for EDA analysis? Ways to find Anomalies in Time Series Data?
Associate Data Scientist Interview Questions
500 associate data scientist interview questions shared by candidates
1st round online coding: python questions were easy. SQL questions though lengthy, were also easy. 2nd round Technical: Qns: 1) Explain projects briefly as mentioned in resume 2) Linear regression? Can we use classification with linear regression 3) Logistic regression, threshold score, ROC AUC curve, imbalanced classification 3) Clustering? Hierarchical , K-Means difference and explain 4) Random-forest, decision tree explain 5) Data analysis using pandas 6) Gave a problem case study and asked me to explain the steps taken: build hypothesis, what will be the impact 3rd round Technical: 1) Take one project and explain approach taken to solve in detail: business problem, data sources, pre-processing steps , feature engineering, algorithm used, evaluation metric 2) Random forest explain 3) different evaluation metrics used for classification - precision, recall 4th round HR general background check challenges faced and how did you resolve accomplishments in work
regarding work exp, whatever mentioned inJD and python
1. Complete project Description 2. Describe Naive Bayes classifier 3. Case study( A person salary dataset and different campaign dataset, Predict whether he will buy the product or not) What all features will you generate from the dataset?
Question based on Machine learning
How to treat outliers Why do we use word regression in logistics regression
Why do you want to work here?
Whats your vies on generative ai
The online screening is bit challenging covering from basic Data Science to Agentic AI concepts and two coding challenges Second was a case study was asked to make an AI application with open source LLM endpoints Third was supposed to be a tech interview on the case study but interviewer asked a seperate concept all to gether Confused and unfortunate experiene
Questions on sql, probability, data structures.
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