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Let’s say you work for a social media company that has just done a launch in a new city. Looking at weekly metrics, you see a slow decrease in the average number of comments per user from January to March in this city.

The company has been consistently growing new users in the city from January to March.

What are some reasons why the average number of comments per user would be decreasing and what metrics would you look into?

What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?

What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?

Decreasing Comments

How would you investigate a decline in the average number of comments per user?

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

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?

Department   Dean, Optometry
Salary   Commensurate with experience
Description   Analyzes, develops, and modifies application programs and ad-hoc programs under moderate supervision. May provide support to enterprise systems.
Codes, tests, debugs, modifies, and troubleshoots application programs and ad-hoc programs in accordance with shop standards.
Analyzes complex application processes and systems and their underlying data structures; identifies and resolves problems.
Installs, tests, and troubleshoots vendor-supported applications.
Assists users with understanding, testing, and using applications and programs, including running programs for users.
Documents data structures, run streams, applications, programs, and other objects according to best practices.
Uses non-core technologies such as voice-activated responses, electronic data interchange, and web interfaces to design, code, test, debug, modify, and troubleshoot systems.
Learns new technologies and techniques.
Performs other job-related duties as assigned.
Basic Qualifications     Preferably 3+ years of experience in designing and implementing large-scale Data Lake and Data Warehouse solutions in the cloud.
Experience with query languages (e.g., SQL, HiveQL, SPARQL), schema definition languages (e.g., DDL, SDL, XSD, RDF), and scripting languages (e.g., Python, Scala).
Understanding of distributed system concepts, including data persistence solutions, data integration techniques, database optimization, and join algorithms.
Experience with CI/CD automation for data lakes using tools like CDK or Terraform.
Preferred Qualifications     Experience with AWS services such as Athena, Glue, Lake Formation, Step Functions, Lambda, S3, DynamoDB, RDS, EMR, and Redshift.
Experience with healthcare data formats like HL7/FHIR, genomics data, and medical imaging data.
Understanding healthcare infrastructure and security requirements.
Knowledge of industry database and analytical technologies, including MPP, NoSQL databases, Data Warehouse design, and BI operations.
Application Attachments   Candidates must submit the following documents:
Cover letter explaining how your experience relates to the position.
Resume.
Salary history (employer name, dates, last salary).
Three references, including current and past supervisors. References are contacted only after the interview process.
Note:  Experience can substitute for education and vice versa.
Additional Information   Requires a thorough understanding of relevant professional disciplines, typically obtained through a 4-year degree or equivalent specialized training, and at least one year of relevant experience.
All positions are security-sensitive and require a criminal background check.
The University of Houston System and its universities are Equal Opportunity Institutions.
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University Of Houston Interview Questions

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University Of Houston Interview Questions

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