Public task directory

Technical interview practice tasks

Every entry below is a crawlable link to a unique public task page. This directory complements the interactive filters and keeps the complete catalog connected through standard pagination.

Page 93 of 386 · 18,491 tasks

Knowledge Check · Easy · 1 min

What is the main purpose of Completeness in ds data cleaning quality

What is the main purpose of Completeness in ds data cleaning quality?

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Knowledge Check · Easy · 1 min

What is the main purpose of Consistency in ds data cleaning quality

What is the main purpose of Consistency in ds data cleaning quality?

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Knowledge Check · Easy · 1 min

What is the main purpose of Uniqueness in ds data cleaning quality

What is the main purpose of Uniqueness in ds data cleaning quality?

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Knowledge Check · Hard · 1 min

While reviewing ds data cleaning quality, a country code contains unknown values. Which action fixes it, and which check proves it worked

While reviewing ds data cleaning quality, a country code contains unknown values. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds data cleaning quality, a feature column is often null. Which action fixes it, and which check proves it worked

While reviewing ds data cleaning quality, a feature column is often null. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds data cleaning quality, end time precedes start time. Which action fixes it, and which check proves it worked

While reviewing ds data cleaning quality, end time precedes start time. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds data cleaning quality, one transaction appears twice. Which action fixes it, and which check proves it worked

While reviewing ds data cleaning quality, one transaction appears twice. Which action fixes it, and which check proves it worked?

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Knowledge Check · Medium · 1 min

While reviewing ds data cleaning quality, a country code contains unknown values. Which action best addresses the problem

While reviewing ds data cleaning quality, a country code contains unknown values. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds data cleaning quality, a feature column is often null. Which action best addresses the problem

While reviewing ds data cleaning quality, a feature column is often null. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds data cleaning quality, end time precedes start time. Which action best addresses the problem

While reviewing ds data cleaning quality, end time precedes start time. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds data cleaning quality, one transaction appears twice. Which action best addresses the problem

While reviewing ds data cleaning quality, one transaction appears twice. Which action best addresses the problem?

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Knowledge Check · Easy · 1 min

What is the main purpose of Minimization in ds data privacy

What is the main purpose of Minimization in ds data privacy?

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Knowledge Check · Easy · 1 min

What is the main purpose of Aggregation in ds data privacy

What is the main purpose of Aggregation in ds data privacy?

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Knowledge Check · Easy · 1 min

What is the main purpose of Access control in ds data privacy

What is the main purpose of Access control in ds data privacy?

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Knowledge Check · Easy · 1 min

What is the main purpose of Retention in ds data privacy

What is the main purpose of Retention in ds data privacy?

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Knowledge Check · Hard · 1 min

While reviewing ds data privacy, a report includes unused personal fields. Which action fixes it, and which check proves it worked

While reviewing ds data privacy, a report includes unused personal fields. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds data privacy, a dashboard exposes single-user behavior. Which action fixes it, and which check proves it worked

While reviewing ds data privacy, a dashboard exposes single-user behavior. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds data privacy, every analyst can query health data. Which action fixes it, and which check proves it worked

While reviewing ds data privacy, every analyst can query health data. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds data privacy, temporary experiment exports remain forever. Which action fixes it, and which check proves it worked

While reviewing ds data privacy, temporary experiment exports remain forever. Which action fixes it, and which check proves it worked?

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Knowledge Check · Medium · 1 min

While reviewing ds data privacy, a report includes unused personal fields. Which action best addresses the problem

While reviewing ds data privacy, a report includes unused personal fields. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds data privacy, a dashboard exposes single-user behavior. Which action best addresses the problem

While reviewing ds data privacy, a dashboard exposes single-user behavior. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds data privacy, every analyst can query health data. Which action best addresses the problem

While reviewing ds data privacy, every analyst can query health data. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds data privacy, temporary experiment exports remain forever. Which action best addresses the problem

While reviewing ds data privacy, temporary experiment exports remain forever. Which action best addresses the problem?

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Knowledge Check · Easy · 1 min

What is the main purpose of Mean in ds descriptive statistics

What is the main purpose of Mean in ds descriptive statistics?

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Knowledge Check · Easy · 1 min

What is the main purpose of Median in ds descriptive statistics

What is the main purpose of Median in ds descriptive statistics?

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Knowledge Check · Easy · 1 min

What is the main purpose of Variance in ds descriptive statistics

What is the main purpose of Variance in ds descriptive statistics?

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Knowledge Check · Easy · 1 min

What is the main purpose of Quantile in ds descriptive statistics

What is the main purpose of Quantile in ds descriptive statistics?

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Knowledge Check · Hard · 1 min

While reviewing ds descriptive statistics, revenue values are roughly symmetric without outliers. Which action fixes it, and which check proves it worked

While reviewing ds descriptive statistics, revenue values are roughly symmetric without outliers. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds descriptive statistics, income has a strongly skewed upper tail. Which action fixes it, and which check proves it worked

While reviewing ds descriptive statistics, income has a strongly skewed upper tail. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds descriptive statistics, two cohorts share an average but differ consistency. Which action fixes it, and which check proves it worked

While reviewing ds descriptive statistics, two cohorts share an average but differ consistency. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds descriptive statistics, latency needs a tail summary. Which action fixes it, and which check proves it worked

While reviewing ds descriptive statistics, latency needs a tail summary. Which action fixes it, and which check proves it worked?

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Knowledge Check · Medium · 1 min

While reviewing ds descriptive statistics, revenue values are roughly symmetric without outliers. Which action best addresses the problem

While reviewing ds descriptive statistics, revenue values are roughly symmetric without outliers. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds descriptive statistics, income has a strongly skewed upper tail. Which action best addresses the problem

While reviewing ds descriptive statistics, income has a strongly skewed upper tail. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds descriptive statistics, two cohorts share an average but differ consistency. Which action best addresses the problem

While reviewing ds descriptive statistics, two cohorts share an average but differ consistency. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds descriptive statistics, latency needs a tail summary. Which action best addresses the problem

While reviewing ds descriptive statistics, latency needs a tail summary. Which action best addresses the problem?

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Knowledge Check · Easy · 1 min

What is the main purpose of Random assignment in ds experiment design

What is the main purpose of Random assignment in ds experiment design?

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Knowledge Check · Easy · 1 min

What is the main purpose of Control group in ds experiment design

What is the main purpose of Control group in ds experiment design?

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Knowledge Check · Easy · 1 min

What is the main purpose of Blocking in ds experiment design

What is the main purpose of Blocking in ds experiment design?

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Knowledge Check · Easy · 1 min

What is the main purpose of Factorial design in ds experiment design

What is the main purpose of Factorial design in ds experiment design?

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Knowledge Check · Hard · 1 min

While reviewing ds experiment design, eligible users choose their own experiment group. Which action fixes it, and which check proves it worked

While reviewing ds experiment design, eligible users choose their own experiment group. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds experiment design, a feature launches to every user at once. Which action fixes it, and which check proves it worked

While reviewing ds experiment design, a feature launches to every user at once. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds experiment design, region strongly predicts the outcome. Which action fixes it, and which check proves it worked

While reviewing ds experiment design, region strongly predicts the outcome. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing ds experiment design, two independent feature choices need testing. Which action fixes it, and which check proves it worked

While reviewing ds experiment design, two independent feature choices need testing. Which action fixes it, and which check proves it worked?

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Knowledge Check · Medium · 1 min

While reviewing ds experiment design, eligible users choose their own experiment group. Which action best addresses the problem

While reviewing ds experiment design, eligible users choose their own experiment group. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds experiment design, a feature launches to every user at once. Which action best addresses the problem

While reviewing ds experiment design, a feature launches to every user at once. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds experiment design, region strongly predicts the outcome. Which action best addresses the problem

While reviewing ds experiment design, region strongly predicts the outcome. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing ds experiment design, two independent feature choices need testing. Which action best addresses the problem

While reviewing ds experiment design, two independent feature choices need testing. Which action best addresses the problem?

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Knowledge Check · Easy · 1 min

What is the main purpose of Lag feature in ds feature engineering

What is the main purpose of Lag feature in ds feature engineering?

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