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Sri Tech Solutions Inc. Interview Questions

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Let’s say that your company is running a standard control and variant AB test on a feature to increase conversion rates on the landing page. The PM checks the results and finds a .04 p-value.

How would you assess the validity of the result?

Experiment Validity

Suppose there exists a new airline named Jetco that flies domestically across North America. Jetco recently had a study commissioned that tested the boarding time of every airline, and it came out that Jetco had the fastest average boarding times of any airline.

What factors could have biased this result, and what would you look into?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

Boarding Times Bias

A new airline came out as the fastest average boarding times compared to other airlines.  What factors could have biased this result and what would you look into?

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

What is a key disadvantage of the F-test when compared to multiple t-tests?

What is a key disadvantage of the F-test when compared to multiple t-tests?

Hundreds of Hypotheses

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

Sri Tech Solutions Inc. Salaries by Position

Azure Data EngineerToronto, Ontario, CanadaFull -Time <ul><li>Azure Data Engineer (minimum 8 years exp)</li><li>Azure Data Factory, Azure Data bricks Spark (Py Spark or scala), SQL</li><li>Experience in Azure ingestion from on-prem source, e.g. mainframe, SQL server, Oracle.</li><li>Experience in Sqoop / Hadoop</li><li>Microsoft Excel (for metadata files with requirements for ingestion)</li><li>Any other certificate in Azure/AWS/GCP and data engineering hands-on experience in cloud</li><li>Strong Programming skills with at least one of Python, Scala or Java</li><li>Strong SQL skills ( T-SQL or PL-SQL)</li><li>Data files movement via mailbox</li><li>Source-code versioning/promotion tools, e.g. Git/Jenkins</li><li>Orchestration tools, e.g. Autosys, Oozie</li><li>Source-code versioning with Git.</li></ul> Nice-to-have skills<ul><li>Experience working with mainframe files</li><li>Experience in Agile environment, JIRA/Confluence tool</li></ul>

Sri Tech Solutions Inc. Interview Questions

Sri Tech Solutions Inc. Interview Guides

Sri Tech Solutions Inc. Interview Questions

Sri Tech Solutions Inc. Salaries by Position

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