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Cornerstone Research Interview Questions

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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

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?

Cornerstone Research Salaries by Position

<h3>Job Description</h3><div>Job Description<div>The Research Engineer position will work collaboratively with teams of: scientists (chemists, physicists, computer, etc.); engineers (mechanical, electrical, aerospace, chemical, materials, software, computer, etc.); technical leaders (both internal and external); business leaders (strategic, sales, marketing, finance, etc.); and, customers (both internal and external.) The Research Engineer will contribute to the team to advance the state-of-the-art in technical knowledge and deliver solutions that solve customer’s challenges. The Research Engineer is expected to plan, propose, manage, conduct and report on research and development activities in their field of specialization or expertise. The Research Engineer is expected to have an awareness of the state-of-the-art in their technical field and to build relationships with external technology and product leaders.Essential Duties and Responsibilities● Collaborate with R&D team to conceptualize and optimize innovative systems for various applied R&D projects.● Formulate conceptual design of products or systems to meet customer requirements.● Develop design criteria including testing methods, production costs, quality standards and completion dates.● Evaluate findings to develop new concepts, products, equipment, or processes or to develop applications of findings to new uses.● Communicate technical results, plans, and issues with internal and external customers, including presenting and writing reports and proposals.● Coordinate or participate in the design, fabrication, assembly, and testing of components and systems.● Manage technical tasks and objectives to meet customers’ schedules and budgets.● Develop and maintain relationships with new and existing customer and supplier base to support program area growth.● Identify and pursue new opportunities that fit within the corporate objectives and strategic direction.● Performs other related duties as assigned.Competencies1. Problem solving/Analysis 2. Technical capacity 3. Strong written and verbal communication skills 4. Collaboration skills; team-oriented mentality 5. Self-motivated 6. Takes initiative 7. Attention to detail Requirements<ul><li>Exclusive U.S. citizenship is required.</li></ul><ul><li>Ability to obtain and maintain a SECRET security clearance is required.</li></ul><ul><li>Minimum B.S. in their respective field of study such as (Electrical, Mechanical, Materials, Aerospace, Chemical, Physics</li><li>Engineering or equivalent is required. Master’s or Ph.D. degree is preferred.</li><li>Three to five years of demonstrated work experience in an applied R&D center is preferred.</li><li>Position may require specific experience in various discipline such as Electrical, Mechanical, Materials, Aerospace, Chemical, Physics, including tools, technologies, and/or methodologies associated with discipline.</li></ul>BenefitsEligible employees of Cornerstone Research Group (CRG) have access to a wealth of health, wellness, and work-life balance benefits, including:<ul><li>Medical, dental, and vision insurance</li><li>PTO: 5 weeks of annual paid time off</li><li>Paid holidays (federal holiday schedule)</li><li>Family-friendly schedule flexibility</li><li>Health savings account (HSA)</li><li>Flexible savings account (FSA)</li><li>Short- and long-term disability</li><li>Group term life</li><li>Voluntary term life</li><li>401(k) retirement account with employer match contribution</li><li>Wellness incentive opportunities</li><li>Casual, flexible, and hybrid 50/50 work environment (based on position responsibilities)</li><li>Free coffee and soft drinks in the office</li><li>Social events</li><li>Free parking</li></ul>Salary Range: $80,000 - $150,000 depending on experienceOUR COMPANYCornerstone Research Group, Inc. (CRG), near Dayton, Ohio, is an Aerospace and Defense company that develops and delivers innovative, customer-focused technology solutions. When you join our dynamic and rapidly-growing organization, you will collaborate closely within our multi-disciplinary team of Engineers and Scientists to rapidly develop and demonstrate innovation across a broad range of technology areas, including our core business areas: Aerospace Systems quiet electric propulsion; electric aircraft systems; design-build-fly prototypes Power and Energy battery technology; portable power systems; power conversion, management, and distribution; vehicle electrification Advanced Materials and Manufacturing composite design and fabrication; high temperature material and process development Medical & Sensor Technology health & wellness products; patient care; wearables; environment monitoring and protectionThe environment is dynamic but highly flexible with many exciting problem-solving opportunities and room to define future areas of technical growth for the organization.WHO ARE WE?CRG’s multidisciplinary team has successfully tackled our customers’ most challenging problems with discipline, creativity and flexibility in core business areas including aerospace systems, power and energy, advanced materials and manufacturing, medical technology, and sensor systems. This has resulted in CRG being recognized as a leader in innovation, in technology commercialization, and in providing a work environment that is deeply rewarding. Because of the nature of our work, exclusive U.S. citizenship is required for employment, and employees may be required to obtain and maintain a security clearance. To learn more about us, please visit: www.crgrp.com.OUR VALUESOur employees are our most important assets. Our team mentality is key to our success. We value:-Honesty and Integrity-Respect and Dedication-Innovation and Collaboration-Humility, Agility and WillWe run fast but value work-life balance and flexibility. Our entrepreneurial / intrapreneurial mindset fosters our growth.CRG is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, ancestry, sex (including pregnancy), age, genetic information, disability, military or veteran status, or any other characteristic protected by law.</div></div>

Cornerstone Research Interview Questions

Cornerstone Research Interview Guides

Cornerstone Research Interview Questions

Cornerstone Research Salaries by Position

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