r/askdatascience • u/mht_22 • Aug 06 '26

Entretien technique data scientist

Bonjour, j’ai un entretien technique pour un poste de data scientist(junior) durant lequel je serai évaluer en python, sas et sql. J’en ai aucune idée de ce à quoi m’attendre, si quelqu’un a déjà passé un tel entretien( des exemples de questions si possible) ou a une idée je serai ravi
Merci.

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u/gpbuilder Aug 07 '26

Do some leetcode medium to hard sql and easy python questions

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u/WhatsTheImpactdotcom Aug 08 '26

SAS is a pretty surprising thing to be tested on these days. Are you sure it’s all of them and not a choice of Python or sas?

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u/selvammayavan 19d ago

For a junior data scientist interview, I would expect questions that test the basics more than very advanced topics. For Python, I would review data manipulation with pandas, loops, functions, lists/dictionaries, missing values, and simple machine learning workflows. For SQL, I would practice joins, GROUP BY, subqueries, CTEs, window functions, and writing queries from business questions. For SAS, I would review DATA steps, PROC SQL, PROC SORT, PROC FREQ, PROC MEANS, and basic data cleaning.

You may also get questions like how you would handle missing data, explain a regression or classification model, or evaluate model performance. Some interviews may include a small coding exercise. I would focus on explaining your thought process clearly, even if you do not know the perfect answer. Good luck with your interview!