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Marathon Ts Interview Questions

A/B Testing

Algorithms

Analytics

Machine Learning

Probability

Product Metrics

Python

Statistics

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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?

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?

This person is responsible for extracting insights and building predictive models from data. Analyzes curated data, builds ML models, and validates them with experiments. The DS researches and defines business problems and translates them into analytical or ML tasks. Conducts exploratory data analysis to identify patterns, correlations, and anomalies.They will be in charge of designing, training, and evaluating statistical, ML, or AI models. Works with SMEs to determine use cases, model requirements, and alternative solutions. Defines requirements and specifications from which Data Specialists build data structures. Works closely with Data Engineers and customers to ensure correct implementation. Required Experience:<ul><li>Bachelor's in Mathematics, OR, Business, Economics, or related field preferred.</li><li>Minimum 7+ years designing and implementing mathematical and statistical models.</li><li>Strong experience with Python/R, PyTorch, Scikit-Learn, Jupyter, visualization, A/B testing.</li><li>SQL (Oracle, MySQL, or Hive).</li><li>Oracle DB and Hadoop experience preferred.</li><li>Ability to work independently and under deadlines.</li><li>Strong communication and problem-solving skills.</li></ul>Clearance Requirement: Must be a US Citizen with an active DoD Secret security clearance. #cjjobs Marathon TS is committed to the development of a creative, diverse and inclusive work environment. In order to provide equal employment and advancement opportunities to all individuals, employment decisions at Marathon TS will be based on merit, qualifications, and abilities. Marathon TS does not discriminate against any person because of race, color, creed, religion, sex, national origin, disability, age or any other characteristic protected by law (referred to as "protected status").

<h3>Job Description</h3><div>Job Description<div>We are seeking a Senior Marketing Analyst with deep expertise in marketing technology strategy and enablement to drive the effective adoption of marketing tools across the organization. This role ensures that technology selection, implementation, and organizational readiness align with overarching business objectives. The Senior Marketing Analyst will play a critical role in assessing current capabilities, identifying opportunities for improvement, contributing to solution design, and supporting the rollout of new marketing technology initiatives.Key ResponsibilitiesAnalysis & Diagnosis<ul><li>Partner with marketing stakeholders to define and diagnose business challenges through research and discovery sessions.</li><li>Evaluate the current MarTech stack and campaign processes to uncover gaps and areas for optimization.</li></ul>Implementation Support<ul><li>Support the development and execution of implementation strategies for new marketing technologies and workflows.</li></ul>Solution Design<ul><li>Contribute to the design of technology and process solutions that align with business goals, success measures, and operational requirements.</li></ul>Change Management<ul><li>Support organizational change efforts by documenting change impact assessments, identifying and mitigating risks, and assisting with communication planning.</li></ul> QualificationsAnalytical Expertise<ul><li>Strong ability to analyze complex business problems, marketing processes, and technology ecosystems.</li></ul>Technical Fluency<ul><li>Hands-on experience with marketing technologies in key focus areas: Content Management, Customer Data & Journey Orchestration, and Workflow Optimization.</li><li>Proficiency in one or more of the following: Adobe Experience Platform (AEP) & Real-Time CDP, Adobe Journey Optimizer, Adobe Workfront, Adobe Creative Cloud & Firefly Services, Digital Asset Management (DAM), Aprimo, or AEM Assets.</li></ul>Documentation Skills<ul><li>Skilled in creating clear, detailed documentation of processes, frameworks, and technical solutions.</li></ul>Project & Change Support<ul><li>Familiarity with implementation planning, rollout execution, and the application of change management principles.</li></ul></div>Company Description<div>Marathon TS provides a full range of professional services for clients that require support from professionals with specialized skills and experience in a specific technical area or subject matter. Marathon TS also provides IT solutions, including strategy, operations, transformation and mission support.</div></div><h3>Company Description</h3><div>Marathon TS provides a full range of professional services for clients that require support from professionals with specialized skills and experience in a specific technical area or subject matter. Marathon TS also provides IT solutions, including strategy, operations, transformation and mission support.</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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