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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?

Statistics

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?

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?

Product Metrics

<div><h2>Head Of Data Governance</h2>Location: Radnor, PA (Airgas HO) - Management - ASGHow Will You Contribute And Grow?At Airgas, we are committed to building a diverse and inclusive workplace that embraces the diversity of our employees, our customers, patients, community stakeholders and cultures across the world.Airgas is Hiring for a Remote Head of Data Governance!The ideal candidate would be located in Radnor, PA, however, we are open to considering anyone near a main office. Those locations are listed on this job posting.Base Pay: $150,000 to $190,000 annualJob Description Summary: The Head of Data Governance will be responsible for defining, implementing, and leading Airgas' enterprise data governance strategy. This leader will partner with business and technology executives to ensure data is trusted, secure, compliant, and usable across the enterprise. The role will oversee data policies, stewardship, data quality, and regulatory alignment, while enabling Airgas to maximize the business value of its data assets.<ul><li>Develop and lead the enterprise-wide data governance framework, policies, and standards.</li><li>Facilitating Data Councils and Domain Committees, where cross-functional stakeholders can align on data definitions, resolve conflicts, and prioritize improvements.</li><li>Partner with Airgas leadership to align governance with data strategy, analytics, and AI initiatives.</li><li>Creating a domain-based stewardship model in which named business and technical data stewards are accountable for the quality and definition of critical data elements (e.g., Customer, Product, Asset, Safety).</li><li>Define and enforce data ownership, stewardship, and accountability models across business domains.</li><li>Ensure compliance with relevant data privacy, security, and regulatory requirements.</li><li>Manage enterprise metadata, data catalogs, and lineage to enable traceability and transparency.</li><li>Partner with operational and business units to embed stewardship in day-to-day processes.</li><li>Build a culture of data accountability and literacy across Airgas.</li><li>Provide training and support to data stewards, analysts, and business users.</li><li>Evangelize the role of governance in enabling digital transformation, customer experience, and AI-driven innovation.</li></ul>Are You a Match?Required Qualifications:<ul><li>Bachelor's Degree from an accredited institution is required.</li><li>10+ years in data management, data quality, or data strategy leadership roles.</li><li>5+ years in cloud and modern data platforms (GCP, AWS, etc.)</li><li>Previous leadership interaction experience (Divisional Presidents, Executives, Stakeholders)</li><li>Previous experience influencing data ownership with a variety of stakeholders</li></ul>Preferred Qualifications:<ul><li>Master's degree is preferred.</li><li>Experience in driving AI counsel highly preferred</li><li>Previously FTE management experience a plus</li></ul>BenefitsWe care about and support all Airgas associates. This is evident not only through our competitive compensation but also through a comprehensive benefits package that includes medical, dental, and vision plans, vacation, sick time, floating holidays, and paid holidays for full-time employees. We provide a progressive parental leave package for our eligible Airgas parents, offering generous paid time off for the birth or placement of children. Additionally, we offer our employees a 401k plan with company matching funds, tuition reimbursement, discounted college tuition for employees' dependents, and an Airgas Scholarship Program.Your Differences Enhance Our PerformanceAt Airgas, we are committed to building a workplace that embraces the diversity of our employees, our customers, patients, community stakeholders and cultures across the world. We welcome and consider applications from all qualified applicants, regardless of their race, gender, sexual orientation, religion, disability or any other protected characteristic. We strongly believe a diverse organization opens up opportunities for people to express their talent, both individually and collectively and it helps foster our ability to innovate by living our fundamentals, acting for our success and creating an engaging environment in a changing world.About AirgasAirgas, an Air Liquide company, is a leading U.S. supplier of industrial, medical and specialty gases, as well as hardgoods and related products; one of the largest U.S. suppliers of safety products; and a leading U.S. supplier of ammonia products and process chemicals. Through the passion and diversity of its 18,000 associates, Airgas fosters a culture of safety, customer success, sustainability and innovation. Airgas associates are empowered to share ideas, take initiative and make decisions.Airgas is a subsidiary of Air Liquide, a world leader in gases, technologies and services for industry and healthcare. Present in 60 countries with approximately 66,500 employees, Air Liquide serves more than 4 million customers and patients.Join us for a stimulating experience: At Airgas, you matter and so does the work you do. As a member of our team, you play an important role in the success of your team, making sure our products are created sustainably and delivered safely and efficiently. In turn, you'll find a welcoming workplace where you're valued for who you are and where you can fill your potential while growing a fulfilling career whatever path you choose.Equal Employment Opportunity InformationWe are an equal opportunity employer. We welcome all qualified applicants regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected characteristic. Airgas, an Air Liquide Company is a Government contractor subject to the Vietnam Era Veterans' Readjustment Assistance Act of 1974 and Section 503 of the Rehabilitation Act of 1973. Airgas does not discriminate against qualified applicants with disabilities, and is committed to providing reasonable accommodations to the known disabilities of such individuals so as to ensure equal access to benefits and privileges of employment. If you are an individual with a disability and would like to request a reasonable accommodation as part of the employment selection process, please contact us by email at us-accommodationrequest@airgas.com.</div>

Question	Topic	Difficulty	Ask Chance
Boarding Times Bias	Statistics	Medium	Very High
Hundreds of Hypotheses	Statistics	Medium	Very High
Decreasing Comments	Product Metrics	Easy	Very High

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