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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?

In an A/B test, how can you check if assignment to the various buckets was truly random?

In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?

In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?

Random Bucketing

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

Westat Salaries by Position

Job Description Westat is an employee-owned corporation providing research services to agencies of the U.S. Government, as well as businesses, foundations, and state and local governments. Westat's research, technical, and administrative staff of more than 2,000 is located at our headquarters in Rockville, Maryland, near Washington, DC. Westat is committed to building a diverse workforce and a culture of inclusivity, belonging and equity for all. We believe that our greatest strength draws on the different backgrounds, cultures, perspectives and experiences of our employees. Job Summary: Westat is seeking a detail-oriented and talented IT Business Analyst to bridge the gap between our software development and project research teams. You will collaborate in and assist in the management of the end-to-end process of identifying stakeholder needs, analyzing, and documenting requirements, testing, and delivering solutions and enhancements to support our clients' missions to improve outcomes in public health, education, social policy, and transportation. This opportunity is a hybrid work arrangement requiring 1 day on-site at our Rockville, MD office. Job Responsibilities: <ul><li>Support the administration and implementation of projects via the Agile project management methodology.</li><li>Collaborate with project and client stakeholders to gather and document business requirements and translate them into technical specifications.</li><li>Develop and maintain requirement documentation, including use cases, process flows, and functional specifications.</li><li>Conduct detailed analysis of business processes, workflows, and systems to identify areas for improvement and optimization.</li><li>Work closely with IT teams to ensure that technical solutions align with project goals and requirements.</li><li>Perform gap analysis to identify discrepancies between requirements and current capabilities.</li><li>Facilitate communication among users, stakeholders, IT, and project management teams.</li><li>Provide support and training to end-users to ensure successful adoption of new systems and processes.</li><li>Monitor project progress and provide regular updates to IT project managers and stakeholders.</li></ul>Basic Qualifications:<ul><li>Typically requires a bachelor's degree and at least 5 years of experience in business analysis or a related role OR an equivalent combination of education and relevant experience.</li><li>Demonstrated success in leading requirements gathering and documentation process in collaboration with clients, stakeholders, and development teams.</li><li>Demonstrated knowledge of Agile methodologies.</li><li>Experience producing high quality documentation for requirements, solution options, business cases, and recommendations on proposed solutions.</li><li>Proficiency with and/or desire to gain proficiency in the use of change control and DevOps management tools (e.g., GitLab, GitHub, JIRA, etc.)</li></ul>Preferred Qualifications:<ul><li>Demonstrated knowledge of IT industry best practices.</li><li>Demonstrated experience working in a professional services research environment.</li><li>Experience using GitLab or GitHub for project collaboration, tracking changes, and managing documentation in an agile team environment.</li><li>Familiarity with data analysis and reporting tools.</li><li>Experience working with end user groups, change management committees, and prioritization processes.</li></ul>Minimum Qualifications:<ul><li>Demonstrated communication skills.</li><li>Collaboration with project teams, managers, and/or clients.</li><li>Organization skills, including time management ability.</li><li>Detail oriented.</li></ul> Westat offers a well-rounded and comprehensive benefits program focused on wellness and work/life balance. Subject to plan requirements, employees may participate in: <ul><li>Employee Stock Ownership Plan</li><li>401(k) Retirement Plan</li><li>Paid Parental Leave</li><li>Vacation Leave (15 days per year)</li><li>Sick Leave (10 days per year)</li><li>Holiday Leave (7 government holidays and 2 floating holidays per year)</li><li>Professional Development</li><li>Health Advocate</li><li>Employee Assistance Program</li><li>Travel Accident Insurance</li><li>Medical Insurance</li><li>Dental Insurance</li><li>Vision Insurance</li><li>Short Term Disability Insurance</li><li>Long Term Disability Insurance</li><li>Life and AD&D Insurance</li><li>Critical Illness Insurance</li><li>Supplemental Life Insurance</li><li>Flexible Spending Account</li><li>Health Savings Account</li></ul> This opportunity will be posted for a minimum of 5 days and applications will be accepted on an ongoing basis. Westat is an Equal Opportunity Employer and does not discriminate on the basis of race, creed, color, religion, sex, national origin, age, veteran status, disability, marital status, sexual orientation, citizenship status, genetic information, gender identity or expression, or any other protected status under applicable law.

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