Junior Data Scientist Interview Questions

1,154 junior data scientist interview questions shared by candidates

Q: Given a large dataset containing time-series data, design an efficient Python function to identify anomalies in real time. Discuss your approach to handle large data processing, including memory optimization, and outline which algorithms or statistical methods you'd use for anomaly detection
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Junior Data Science Analyst

Interviewed at Publicis Sapient

3.4
Oct 27, 2024

Q: Given a large dataset containing time-series data, design an efficient Python function to identify anomalies in real time. Discuss your approach to handle large data processing, including memory optimization, and outline which algorithms or statistical methods you'd use for anomaly detection

there were a bunch of statistical questions for example about p-values and experimental design as well as questions about XGB and Random Forest. They asked about the presentation and the style of presentation and what was on the slides as well.
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Junior Data Scientist

Interviewed at Lidl

3.4
Sep 11, 2025

there were a bunch of statistical questions for example about p-values and experimental design as well as questions about XGB and Random Forest. They asked about the presentation and the style of presentation and what was on the slides as well.

Crear una empresa para un cliente cuya única restricción es que fuese un negocio a través de internet. El cliente no tiene ninguna experiencia previa en este sector y no hay limite de presupuesto u otras restricciones.
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Junior Data Science Consultant

Interviewed at Management Solutions

3.8
Mar 1, 2022

Crear una empresa para un cliente cuya única restricción es que fuese un negocio a través de internet. El cliente no tiene ninguna experiencia previa en este sector y no hay limite de presupuesto u otras restricciones.

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