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Junior Data Analyst Interview Questions

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1,655 junior data analyst interview questions shared by candidates

You have a real-time data feed that occasionally sends corrupted or out-of-sequence data points. How would you design a system to clean this data before it's used by our trading models, without introducing significant latency
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Junior Data Analyst

Interviewed at Karanwal Capital

4.7★
Sep 24, 2025

You have a real-time data feed that occasionally sends corrupted or out-of-sequence data points. How would you design a system to clean this data before it's used by our trading models, without introducing significant latency

There are 8 identical balls only one weighs heavier. You cannot know which ball this is unless you weigh it with a balance. What is the minimun number of rounds of weighing do you need to find the heavier ball with certainty?
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Junior Data Analyst

Interviewed at Accenture

3.7★
Jun 29, 2018

There are 8 identical balls only one weighs heavier. You cannot know which ball this is unless you weigh it with a balance. What is the minimun number of rounds of weighing do you need to find the heavier ball with certainty?

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