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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

<h3>Job Description</h3><div>Job Description<div><div>WHO WE AREConsumer Reports is an independent, nonprofit organization dedicated to a fair and just marketplace for consumers. Our team is made up of truth tellers, change agents, and consumer advocates who investigate and build coalitions to fight for fairness and justice in the marketplace for consumers. We leverage our evidence-based approach to demand safer products, a healthier environment, and equitable services for everyone. Our mission starts with you. We offer medical benefits that start on your first day as a CR employee that include behavioral health coverage, family planning and a generous 401K match. Learn more about how CR advocates on behalf of our employees.</div>OVERVIEWAT CR we know there's more to testing cars than measuring how the rubber meets the road. In addition to testing 50 vehicles a year (driving them hundreds of thousands of miles), we also dig deep into the data--churing through reams of reliability and satisfaction surveys collected from our members, as well as external data, to supplement the analysis, evaluation and rating from our test drives. The information we share helps consumers make fully informed choices about the purchase and maintenance of their vehicles. The Automotive Data Analyst and Content Researcher will report to the Associate Director, Automotive Data Integration. In this position, you will oversee the collection, validation, and internal processes for the various auto vendor and CR survey and testing data. Working closely with other auto team members, you will apply your data management expertise to ensure that our auto data collection is consistent and our analysis is accurate.If you love data and all things automotive, we'd love to hear from you.This is an on-site position, based in Colchester, CT. This position is not eligible for relocation assistance or sponsorship.How You'll Make An ImpactAt CR, we test products and services so consumers can make informed decisions and use their buying power to help create a marketplace that puts them first. You'll be an integral part of our mission as you maintain our auto database of information and inform our team of the latest developments in the automotive market. On a daily basis, you may:<ul><li>Partner with Auto Test engineers and technicians to translate individual tests to ratings.</li><li>Collaborate with Data Engineering to assure the database is optimized for the auto test and publish program.</li><li>Ensure the Model Year Vehicle data is updated to reflect the latest information for on-line articles and reports.</li><li>Identify and map various external and internal data feeds to provide comprehensive data for consumers and clients.</li><li>Maintain quality and integrity of data in the Cars Database. </li><li>Identify trends from our extensive automotive data and outside sources and submit concise reports with data and graphics.</li><li>Utilize AI and data visualization tools for understanding and presenting large datasets and information. </li><li>Follow automotive news and changes in industry and individual models.</li><li>Help identify which new vehicles should be tested or updated.</li><li>Work with and support the Program Leader, Auto Data Analytics to process survey data and to provide insights and data for articles, videos, and social media.</li><li>Assist the Associate Director in assessing new data needs and identifying the best methods to capture and incorporate in the database as well as report mechanisms.</li><li>Update written road tests for publishing on the Consumer Reports website.</li></ul>ABOUT YOUYou'll Be Highly Rated If:<ul><li>You have the experience. You have at least 3-years of experience working in automotive data.</li><li>You have the skills. You are proficient and have worked with Tableau, Python and SQL.</li><li>You are data driven. You use data analysis, visualization and fundamentals to drive decisions and recommendations.</li><li>You are a strong collaborator, able to partner with other stakeholders, including content and technology.</li><li>You know the systems. You are comfortable with and proficient in Microsoft Office and Google Suite.</li><li>You have a valid Driver's License.</li></ul>You'll Be One of Our Top Picks If:<ul><li>You've worked with emerging technologies. You are familiar with machine learning and AI.</li></ul>FAIR PAY AND A JUST WORKPLACEAt Consumer Reports, we are committed to fair, transparent pay and we strive to provide competitive, market-informed compensation.The target salary range for this position is $75K-$85K. It is anticipated that most qualified candidates will fall near the middle of this range.Compensation for the successful candidate will be informed by the candidate's particular combination of knowledge, skills, competencies, and experience.<div>Consumer Reports is an equal opportunity employer and does not discriminate in employment on the basis of actual or perceived race, color, creed, religion, age, national origin, ancestry, citizenship status, sex or gender (including pregnancy, childbirth, related medical conditions or lactation), gender identity and expression (including transgender status), sexual orientation, marital status, military service or veteran status, protected medical condition as defined by applicable state or local law, disability, genetic information, or any other basis protected by applicable federal, state or local laws. Consumer Reports will provide you with any reasonable assistance or accommodation for any part of the application and hiring process.</div></div></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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