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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?

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

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?

Atr International Salaries by Position

Hybrid in Seattle, WA (3 days onsite weekly)Large client in IT industry6 month contract (chance at extension)Job Description Play a part in the next revolution in human-computer interaction. Build groundbreaking technology for large scale systems, spoken language, big data, and artificial intelligence. The AI/ML - Machine Translation team is looking for exceptional Software Engineers passionate about delighting customer’s experience, building and improving the Machine Learning Automation and Tooling. You will be a part of a team that's responsible for a wide variety of language technologies related development activities. Your focus will be on developing the model automation pipeline which is highly scalable, robust and efficient. The role will be part of the model automation team to deal with large quantities of data, apply the state-of-the-art methods in deep learning to tackle real world problems, create the production quality models at scale and set up ML CI/CD pipelines. You should therefore be passionate about creating phenomenal products that are used by millions of people. You’re expected to be a team player who thrives in a fast paced environment with rapidly changing priorities.Requirements:• Excellent coding skills in the one of the following languages , e.g. Python, bash scripting, java, C/C++ etc.• 3+ years working experience in ML lifecycle, Model management, big data/Spark/MapReduce, large distributed system, cloud computing etc• Knowledge in ML technologies or toolkits such as NLP, MT, ASR, pyTorch, JAX is a big plus• Excellent communication and problem solving skill• Fast learner and strong motivation on growing and learning new technologies Skills required:- Several years of Objective-C / Swift experience- Strong understanding of UI- Kit & Foundation frameworks- Experience with the Xcode & Instruments tools for debugging bugs and performance issues- AppKit knowledge is a plusXC- Test framework understanding is a plus- MAC OS English: Read, Write, and Speak

We are seeking a Business Analyst with advanced SQL experience for a ery important client •Support multi-million-dollar Technical Security initiatives by analyzing and reporting complex SQL datasets on the backend, and excel exported datasets on the front end. •Support design, build, management, and configuration of easily understood dashboards. •Craft exciting, polished, and articulate PowerPoint presentations for executive leaders •Perform complex reporting data analysis understand, synthesize, infer, and present results using advanced PowerPoint presentation techniques. •Collect and analyze/measure key performance metrics. •Ability to rapidly learn to navigate software and understand how data is generated and reported from front and back end. Requirement: The ideal candidate will possess the following qualifications: Business Analyst with advanced SQL experience Deep knowledge of the software ""Genetec Video Management system"" and its front and back end reporting capabilities is highly preferred and highest importance. Skills SQL/SQL Server/ SQL Query MS Excel/MS Project Product Management Business Systems Analysis Communication/Public Speaking App Development Project Management

We are seeking a Business Analyst with advanced SQL experience for a ery important client •Support multi-million-dollar Technical Security initiatives by analyzing and reporting complex SQL datasets on the backend, and excel exported datasets on the front end.•Support design, build, management, and configuration of easily understood dashboards.•Craft exciting, polished, and articulate PowerPoint presentations for executive leaders•Perform complex reporting data analysis understand, synthesize, infer, and present results using advanced PowerPoint presentation techniques.•Collect and analyze/measure key performance metrics.•Ability to rapidly learn to navigate software and understand how data is generated and reported from front and back end.Requirement:The ideal candidate will possess the following qualifications:Business Analyst with advanced SQL experienceDeep knowledge of the software \"Genetec Video Management system\" and its front and back end reporting capabilities is highly preferred and highest importance.SkillsSQL/SQL Server/ SQL QueryMS Excel/MS ProjectProduct ManagementBusiness Systems AnalysisCommunication/Public SpeakingApp DevelopmentProject Management

We are seeking Battery Modeling & Algorithm Engineer (Data Engineer III) or a very important client. Job Summary Are you passionate about batteries and modeling? Are you interested in working on the forefront of Battery Management Systems? In this role you will apply your skills as a modeling and algorithm engineer to design and develop future battery models and algorithms for next generation consumer electronic products You will be part of a multi-functional team working on the forefront of battery technologies, developing innovating models, algorithms, architectures and products that are used by hundreds of millions of people every day. Description In this position you will be expected to use a combination of advanced mathematics, machine learning, electrical engineering, and control engineering knowledge to: •Develop advanced battery models and control algorithms to improve battery performance. •Develop models to estimate and optimize cell and pack performance in design phase. •Analyze large volumes of test data to understand cell performance differences and propose design improvements to address them. •Develop algorithms to estimate State of charge and State of Power of batteries. •Develop machine learning algorithms or mathematical models to predict cell performance across life. •Develop simulation models and tools to evaluate such new algorithms. Requirement: Key Qualifications •General understanding of Li-ion battery modeling Knowledge of detailed battery modeling and electrochemistry is a plus Knowledge of battery cell design and materials would also be a plus. •Proficient in using modeling and simulation tools like MATLAB, Simulink and other specialized tools. •Experience in writing efficient codes to analyze large data sets Familiarity with Git and code review process Attention to details and ability to develop high quality code documentation. •Experience in dynamic modeling, statistical and machine learning algorithm design. •Experience of developing solutions using control theories like Kalman filters, state observers. •Experience in mathematical modeling of linear and nonlinear dynamical systems and distributed parameter systems Experience solving optimization problems. •Expertise in C/C++ programming is a plus. Benefits: Benefits include: -MEC/ACP Medical -Voluntary Dental, Vision, Life, Supplemental Income -401k (must meet requirements) -sick leave as required by state/county Washington applicants: Employees (and their families) are covered by MEC/ACP medical,VOLUNTARY dental, VOLUNTARY vision, and VOLUNTARY basic life insurance Employees are able to enroll in our company's 401k plan, as well as a deferred compensation plan when employment requirements are met Employees will also receive one hour of paid sick leave for every 40 hours worked per state guidelines and requirements.

Contract Hybrid in San Francisco, CA or Seattle WA (3 days onsite weekly)Large client in IT industryW2 Candidates OnlyJob Description: Key Responsibilities:· Develop and maintain Python scripts for data analysis and automation.· Design, implement, and manage ETL pipelines using tools such as Apache Airflow.· Analyze large datasets to identify trends, patterns, and insights.· Collaborate with cross-functional teams to understand data requirements and deliver actionable insights.· Conduct quality assurance and validation of data to ensure accuracy and reliability.· Prepare reports and visualizations to communicate findings effectively. Requirements:Desired Skills and Qualifications:· Proficiency in Python programming.· Hands-on experience with data ETL processes,· Strong analytical and problem-solving skills.· Plus: Experience with human evaluation, prompt engineering, machine learning, statistical analysis · Excellent communication and teamwork abilities.· Bachelor’s degree in Computer Science, Data Science, or a related field.

Responsibilities: Work on project milestones for metadata identification, standardization, and updates within their respective data lake house tables. Develop and publish metrics for metadata completeness and data catalog usage, fostering its wider adoption. Serve as a subject matter expert for data catalog, create training materials and educate users as needed. Execute software solutions, design, development, and technical troubleshooting with ability to think beyond routine or conventional approaches to build solutions or break down technical problems. Requirement: Required qualifications, capabilities, and skills: •Strong understanding of data management principles, governance frameworks and best practices. •Experience with data cataloging tools and systems (e.g., Collibra, Alation, Informatica, Atlan, Databricks Unity Catalog) •Full-stack development, debugging, and maintaining code in a large enterprise with one or more modern programming languages (e.g Java/SpringBoot, Python/Flask) •Solid understanding of SDLC practices, Unit/Regression Testing, Application Resiliency, Security, Agile Methodologies, and CI/CD. •Excellent analytical and problem-solving skills •Ability to work independently as well as in a team environment. Datamart Data Modeling Data Warehousing Implementation Data Analysis Development Logical Design Expert in at least one technology and design technique as well as experience working across large environments with multiple operating systems/infrastructure for large-scale programs (e.g., Expert Engineers) starting to be firm-wide resources working on projects across Client •Is multi-skilled with expertise across software development lifecycle and toolset •May be recognized as a leader in Agile and cultivating teams working in Agile frameworks •Sought out as coach for at least one technical skill •Strong understanding of techniques such as Continuous Integration, Continuous Delivery, Test Driven Development, Cloud Development, resiliency, security •Stays abreast of cutting edge technologies/trends and uses experience to influence application of those technologies/trends to support the business may give speeches and outside the firm, writes articles

Atr International Interview Questions

Atr International Interview Guides

Atr International Interview Questions

Atr International Salaries by Position

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