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Firstenergy 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 we have a table with an <code>id</code> and <code>name</code> fields. The table holds over 100 million rows and we want to sample a random row in the table without throttling the database.

Write a query to randomly sample a row from this table.

Input:

<code>big_table</code> table

<table>
<thead>
<tr>
<th>Columns</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>name</code></td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>

Write a query to randomly sample a row from a big table.

Random SQL Sample

Firstenergy Salaries by Position

FirstEnergy at a Glance Take the next step in your career now, scroll down to read the full role description and make your application. We are a forward-thinking electric utility powered by a diverse team of employees committed to making customers' lives brighter, the environment better and our communities stronger. FirstEnergy (NYSE: FE) is dedicated to integrity, safety, reliability and operational excellence. Headquartered in Akron, Ohio, FirstEnergy includes one of the nation's largest investor-owned electric systems, more than 24,000 miles of transmission lines that connect the Midwest and Mid-Atlantic regions, and a regulated generating fleet with a total capacity of more than 3,500 megawatts. About the Opportunity This is an open position with FirstEnergy Service Company, a subsidiary of FirstEnergy Corp [FEU]. The selected candidate may be based out of Akron OH, Greensburg or Reading PA, Fairmont WV, or Holmdel NJ. Position Summary: The successful candidate will support the Distribution Engineering and Planning organization and be responsible for data mining, data interpretation and disseminating information to the leadership team for review and analysis. The Business Analyst works closely with stakeholders to identify goals, best practices, and other active methods for gathering and analyzing data as it relates to the needs of the organization. In this role, the Business Analyst will provide statistical insights and report development/generation that help the decision-making process, align capital and resource allocation within the business budget, provide granular safety related performance data, and ad hoc business requests. The Business Analyst will drive fresh initiatives for safety, financial planning and business data utilization and identify business areas that can be improved for safety performance, increased efficiency, and strengthen business processes. The successful candidate will work closely with others throughout Distribution Engineering leadership team to communicate their findings and help implement changes to support organizational goals and strategy. This position is responsible for supporting the team with data requests, presentation development, and support of various business initiatives such as DEI and Safety Steering Committees. Responsibilities include: - Providing a high level of service, continuous support and proactive involvement to leadership and peers. - Conducting business-specific research and analyzing data, interpreting and compiling results in a concise and professional manner, and assisting in implementation activities when necessary. - Developing charts, tables, presentations and other elements of data visualization - Understanding business strategies, goals, and requirements - Identifying and prioritizing the organization's functional and technical needs and requirements - Creating models and reports to support business decisions - Forecasting, budgeting, and performing both variance analysis and financial analysis - Building respectful and effective working relationships with key stakeholders in multiple business units to work collaboratively on various requests and initiatives - Timely responding to requests - Providing storm support, as required, including off-hours, weekends and holidays - Delivering quality and accurate work within established deadlines - Contributing to solutions by taking the initiative in developing alternatives and recommendations. - Actively seeking ways to build, challenge, and add value within scope of assignments. - Exhibit an in-depth understanding of the products and services and of customer needs and expectations. - Recommends and implements solutions to the more complex issues and assignments and develop process improvements and efficiencies to improve customer service. - Possesses strong skills and knowledge and provides leadership on initiatives and projects. Qualifications include: - Two year degree in Business, Finance, Accounting, Economics, Engineering or a related discipline is preferred, along with a minimum of 4 years related work experience. - In lieu of a degree, a minimum of 7 years of direct, related experience will be considered. Benefits, Compensation & Workforce Diversity At FirstEnergy, employees are key to our success. We depend on their talents to meet the challenges of our changing business environment. We are committed to rewarding individual and team efforts through our total rewards philosophy which includes competitive pay plus incentive compensation, a company-sponsored pension plan, 401(k) savings plan with matching employer contribution, a choice of medical, prescription drug, dental, vision, and life insurance programs, as well as skills development training with tuition reimbursement. Please visit our website at www.firstenergycorp.com to learn more about all of our employee rewards programs. FirstEnergy proudly supports workforce diversity. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, sex, sexual orientation, gender identity, age, status as a protected veteran, or status as a qualified individual with a disability. No recruiters or agencies without a previously signed contract. Unable to sponsor or transfer H-1B visas at this time. Safety Safety is a core value for FirstEnergy and is essential to all of our business activities. We ensure employees have the tools, information, and processes to perform their duties in a manner that assures safety for themselves, their co-workers, our customers and the public. Our goals are to provide a safe work environment, to maintain an accident-free, injury-free workplace, and to promote and maintain public safety. To meet these goals, we dedicate ourselves to achieving world-class safety standards. Position Classification Exempt FirstEnergy Human Resources Team

FirstEnergy at a Glance We are a forward-thinking electric utility powered by a diverse team of employees committed to making customers lives brighter, the environment better and our communities stronger. FirstEnergy (NYSE: FE) is dedicated to integrity, safety, reliability and operational excellence. Headquartered in Akron, Ohio, FirstEnergy includes one of the nation's largest investor-owned electric systems, more than 24,000 miles of transmission lines that connect the Midwest and Mid-Atlantic regions, and a regulated generating fleet with a total capacity of more than 3,500 megawatts. About the Opportunity This is an open position with FirstEnergy Service Company, a subsidiary of FirstEnergy Corp [FEU]. The selected candidate may be based out of Akron OH, Greensburg or Reading PA, Fairmont WV, or Holmdel NJ. Position Summary: The successful candidate will support the Distribution Engineering and Planning organization and be responsible for data mining, data interpretation and disseminating information to the leadership team for review and analysis. The Business Analyst works closely with stakeholders to identify goals, best practices, and other active methods for gathering and analyzing data as it relates to the needs of the organization. In this role, the Business Analyst will provide statistical insights and report development/generation that help the decision-making process, align capital and resource allocation within the business budget, provide granular safety related performance data, and ad hoc business requests. The Business Analyst will drive fresh initiatives for safety, financial planning and business data utilization and identify business areas that can be improved for safety performance, increased efficiency, and strengthen business processes. The successful candidate will work closely with others throughout Distribution Engineering leadership team to communicate their findings and help implement changes to support organizational goals and strategy. This position is responsible for supporting the team with data requests, presentation development, and support of various business initiatives such as DEI and Safety Steering Committees. Responsibilities include: Providing a high level of service, continuous support and proactive involvement to leadership and peers. Conducting business-specific research and analyzing data, interpreting and compiling results in a concise and professional manner, and assisting in implementation activities when necessary. Developing charts, tables, presentations and other elements of data visualization Understanding business strategies, goals, and requirements Identifying and prioritizing the organization's functional and technical needs and requirements Creating models and reports to support business decisions Forecasting, budgeting, and performing both variance analysis and financial analysis Building respectful and effective working relationships with key stakeholders in multiple business units to work collaboratively on various requests and initiatives Timely responding to requests Providing storm support, as required, including off-hours, weekends and holidays Delivering quality and accurate work within established deadlines Contributing to solutions by taking the initiative in developing alternatives and recommendations. Actively seeking ways to build, challenge, and add value within scope of assignments. Exhibit an in-depth understanding of the products and services and of customer needs and expectations. Recommends and implements solutions to the more complex issues and assignments and develop process improvements and efficiencies to improve customer service. Possesses strong skills and knowledge and provides leadership on initiatives and projects. Qualifications include : Two year degree in Business, Finance, Accounting, Economics, Engineering or a related discipline is preferred, along with a minimum of 4 years related work experience. In lieu of a degree, a minimum of 7 years of direct, related experience will be considered. Benefits, Compensation & Workforce Diversity At FirstEnergy, employees are key to our success. We depend on their talents to meet the challenges of our changing business environment. We are committed to rewarding individual and team efforts through our total rewards philosophy which includes competitive pay plus incentive compensation, a company-sponsored pension plan, 401(k) savings plan with matching employer contribution, a choice of medical, prescription drug, dental, vision, and life insurance programs, as well as skills development training with tuition reimbursement. Please visit our website at www.firstenergycorp.com to learn more about all of our employee rewards programs. FirstEnergy proudly supports workforce diversity. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, sex, sexual orientation, gender identity, age, status as a protected veteran, or status as a qualified individual with a disability. No recruiters or agencies without a previously signed contract. Unable to sponsor or transfer H-1B visas at this time. Safety Safety is a core value for FirstEnergy and is essential to all of our business activities. We ensure employees have the tools, information, and processes to perform their duties in a manner that assures safety for themselves, their co-workers, our customers and the public. Our goals are to provide a safe work environment, to maintain an accident-free, injury-free workplace, and to promote and maintain public safety. To meet these goals, we dedicate ourselves to achieving world-class safety standards. Position Classification Exempt FirstEnergy Human Resources Team

FirstEnergy FirstEnergy at a Glance We are a forward-thinking electric utility powered by a diverse team of employees committed to making customers' lives brighter, the environment better and our communities stronger. FirstEnergy (NYSE: FE) is dedicated to safety, reliability and operational excellence. Headquartered in Akron, Ohio, FirstEnergy includes one of the nation's largest investor-owned electric systems, more than 24,500 miles of transmission lines that connect the Midwest and Mid-Atlantic regions, and a regulated generating fleet with a total capacity of 3,780 megawatts. About the Opportunity This is an open position with FirstEnergy Service Co., a subsidiary of FirstEnergy Corp. [SC00] The ability to work remotely within the United States may be available based on business need. This option is not available in the states of California, Colorado, Illinois, Kentucky, Massachusetts, Montana, Nebraska, New York, Oregon or Washington at this time. The Data Management team within FirstEnergy's Information Technology group is responsible for the design, development and enhancement of Data Warehousing and Analytics applications. We seek an individual that can confidently play the role of a Data Engineer during Data Lake / Data Warehouse development. A Data Engineer at FirstEnergy works closely with Business Systems or Business resources to make appropriate technological choices; proceeds to architect and design the required application. This role requires deep understanding of data architecture, data engineering, data analysis, reporting, and a basic understanding of data science techniques and workflows. The ideal candidate is a skilled data and software engineer with experience creating data products supporting analytic solutions. Responsibilities Include: A Data Engineer at FirstEnergy typically performs the following activities during the application development process: Requirements analysis: In conjunction with a Business Systems team Analyst or independently, work with the business to collect, document and review functional and non-functional requirements for the application. Solutions maintenance: Responsible for maintaining the data warehousing platforms and all components of MemSQL/SingleStore, Teradata and legacy Oracle Data Marts, Azure Synapse Notebooks/Pipelines. Architect: In conjunction with a Business Systems team Analyst or independently, decompose the application into various components and make appropriate technological choices in the implementation and integration of the components also giving due consideration to availability, recovery, security, performance, and governance requirements. Analysis and design: Define and document the logical data model and create the physical data model in a database. Define and create Data Lake and Data Warehousing models for reporting or analytics. Identify the various contributing source systems and source data elements; help define & build the extraction functions to obtain the source data supporting change data capture. Define and document the various data transformations that must occur during this process. Incorporate maintainability, security and performance requirements into the design and specifications. Build and test: Create physical data model. Implement data extraction functions and transformation logic. Document all design and specifications. Document metadata information. Develop early prototypes for the application, as necessary. Support the development of complex logic or functions necessary that help the organizationBBTECH RESERVED CH

Firstenergy Interview Questions

Firstenergy Interview Guides

Firstenergy Interview Questions

Firstenergy Salaries by Position

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