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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 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

In an A/B test, how can you check if assignment to the various buckets was truly random?

In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?

In an A/B test, which of the following is a common method to determine if the assignment to the test groups was truly random?

Random Bucketing

Energy transfer Salaries by Position

Are you interested in joining our team? Chat with our digital assistant to learn more about our company and apply right from your mobile device!Text ETP to 25000 to get started or apply through this web posting if you prefer.Energy Transfer, a Fortune 50 organization, recognized by Forbes as one of America's best large employers, is dedicated to responsibly and safely delivering America's energy. We are driven to inspire our employees to create superior value for our customers, our investors, a sustainable future and giving back to the community where we have long-standing commitments to causes including MD Anderson Children's Cancer Hospital, The Salvation Army, American Heart Association, Ronald McDonald House and many more. Come join our award winning 10,000 strong organization as we fuel the world and each other!This position comes with world class compensation, benefits, 401(k) match, profit sharing, and PTO.SummaryThe Lead Analyst- IT ETRM Apps responsible for supporting crude marketing's Openlink Rightangle implementation and associated customizations/integrations. The role requires strong systems support, communication and organizational skills with focus on customer service.Essential Duties and Responsibilities:* Interact daily with end-users, developers and managers to support and enhance Rightangle* Document issues and enhancements with the appropriate level of detail for the development team to resolve technical issues and build solutions* Field questions from end-users and assist with data issues* Create and maintain system functional design documents* Complete analysis, testing and deployment for Rightangle system upgrades, patches and custom code releases.* Follow defined change management procedures and internal guidelines* Availability to support after hours on business critical situations and scheduled tasks* Must be able to work on multiple simultaneous tasks with limited supervision* Ensure requirements are being met in accordance with corporate compliance* Ensure proper communication to all levels of the organizationRequirements:Education and/or Experience, Knowledge, Skills & Abilities:To perform this job successfully, an individual must be able to perform each essential job duty satisfactorily. The requirements for this position are listed below:* Bachelor's degree preferably in Information Technology, Information Systems or related area* Excellent customer service, interpersonal, communication and team collaboration skills* 2-5 years of experience in application support.* A strong understanding of SQL and relational database concepts* Familiarity with SDLC processes such as Agile, Waterfall, etc.* Experience working with ticketing systems such as Remedy* Familiarity with front to back office system data flow in Rightangle, including but not limited to Trade Capture, Contract Management, Lease Center, Credit, Risk, Scheduling, Inventory and Settlements* Ability to create complex pricing provisions and report views* Capable of testing business scenarios in Rightangle from deal capture to invoicing* Excellent analytical and problem solving skills, strong organizational skills, attention to detail* Demonstrated initiative with commitment and ability to work under pressure and meet tight deadlines while still maintaining high quality standards* Problem solver; can quickly assess a situation then develop and implement effective solutionsRequired experience is commensurate with the selected job level:* The Specialist/Analyst level requires a Bachelor's degree or equivalent experience and 2-5 years of relevant job related experience* The Senior Specialist/Analyst level requires a Bachelor's degree or equivalent experience and 5-8 years of relevant job related experience* The Lead Specialist/Analyst level requires a Bachelor's degree or equivalent experience and 8+ years of relevant job related experiencePreferred Qualifications:* Experience with Openlink Rightangle S14+* Previous experience in Oil & Gas industryWorking Conditions:The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job.* Usually, normal office working conditions.* Must be able to remain in a stationary position 50% of the time due to prolonged periods of sitting or standing.* Occasional overnight travel may be required.An equal opportunity employer/disability/vetEnergy Transfer is an equal opportunity employer and does not discriminate against qualified applicants on the basis of actual or perceived race, color, religion, sex, sexual orientation, gender identity, age, national origin, disability, pregnancy, veteran status, genetic information, citizenship status, or any other basis prohibited by law.The nature and frequency of the above working conditions and requirements may vary depending on individual operational circumstances. Where feasible, the Partnership will make reasonable accommodations to qualified individuals with disabilities to enable them to perform the essential functions of the job.DISCLAIMER:The statements listed in this job posting, which are subject to change, are intended to describe the general nature and level of work being performed by people assigned to this job. They are not intended to be an exhaustive list of all responsibilities, duties and skills required of personnel so classified.

Are you interested in joining our team? Chat with our digital assistant to learn more about our company and apply right from your mobile device!Text ETP to 25000 to get started or apply through this web posting if you prefer.Energy Transfer, recognized by Forbes as one of America's best large employers, is dedicated to responsibly and safely delivering America's energy. We are driven to inspire our employees to create superior value for our customers, our investors, a sustainable future and giving back to the community where we have long-standing commitments to causes including MD Anderson Children's Cancer Hospital, The Salvation Army, American Heart Association, Ronald McDonald House and many more.We value all of our employees who make our growth and success possible. We are proud to offer industry leading compensation, comprehensive benefits, 401(k) match with additional profit sharing, PTO and abundant career opportunities.Come join our award winning 11,000 strong organization as we fuel the world and each other!Summary:The Risk Analyst supports various trade desks at Energy Transfer by performing business analytics and measuring exposure to commodity prices. There is opportunity to Interact with traders and senior management- assuring that pricing, hedging, and risk evaluation techniques are applied and monitored.Essential Duties and Responsibilities:* Monitor, measure, and report market price risks on a daily basis relating to price-exposure from company assets and long-term contracts, wholesale physical energy transactions, inventory, and financial derivatives* Determine market-price risk positions and work with trade desks to minimize exposure* Validate end-of-day curves in the risk system and mark-to-market of forward positions* Analyze and identify P&L and position drivers of various trading books encompassing a wide array of energy commodities and financial instruments* Identifies and resolves issues on daily position and P&L reporting* Communicate and resolve risk limit breaches appropriately* Support requests from internal and external auditors* Maintain margin requirements with clearing banks* Work closely with I.T. on risk system (ETRM) improvements and testing new enhancements* Ensure exchange (ICE & CME) and regulatory (CFTC & FERC) complianceRequirements:Education and/or Experience, Knowledge, Skills & Abilities:To perform this job successfully, an individual must be able to perform each essential job duty satisfactorily. The requirements for this position are listed below:* Bachelor's degree in business, economics, mathematics, accounting or related field* 2-5 years of related experience* Strong Excel and Microsoft Office skillsPreferred Qualifications:* Self-starter with ability to work with limited supervision* Strong interpersonal communication abilityWorking Conditions:The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job.* Usually, normal office working conditions.* Must be able to remain in a stationary position 50% of the time due to prolonged periods of sitting or standing.* Occasional overnight travel may be required.* Occasional visits to industrial/manufacturing settings, which may include exposure to various materials and chemicals, as well as extreme temperature conditions and loud machinery, and require appropriate personal protective equipment.An equal opportunity employer/disability/vetEnergy Transfer is an equal opportunity employer and does not discriminate against qualified applicants on the basis of actual or perceived race, color, religion, sex, sexual orientation, gender identity, age, national origin, disability, pregnancy, veteran status, genetic information, citizenship status, or any other basis prohibited by law.The nature and frequency of the above working conditions and requirements may vary depending on individual operational circumstances. Where feasible, the Partnership will make reasonable accommodations to qualified individuals with disabilities to enable them to perform the essential functions of the job.DISCLAIMER: The statements listed in this job posting, which are subject to change, are intended to describe the general nature and level of work being performed by people assigned to this job. They are not intended to be an exhaustive list of all responsibilities, duties and skills required of personnel so classified.

Are you interested in joining our team? Chat with our digital assistant to learn more about our company and apply right from your mobile device Text ETP to 25000 to get started or apply through this web posting if you prefer. Energy Transfer, recognized by Forbes as one of America's best large employers, is dedicated to responsibly and safely delivering America's energy. We are driven to inspire our employees to create superior value for our customers, our investors, a sustainable future and giving back to the community where we have long-standing commitments to causes including MD Anderson Children's Cancer Hospital, The Salvation Army, American Heart Association, Ronald McDonald House and many more. We value all of our employees who make our growth and success possible. We are proud to offer industry leading compensation, comprehensive benefits, 401(k) match with additional profit sharing, PTO and abundant career opportunities. Come join our award winning 11,000 strong organization as we fuel the world and each other Provides varied and complex management and/or operational analysis, reports and recommendations in support of business/departmental programs. Performs various evaluations, controls, and calculations to produce, support, and maintain data system integrity. Integrates and compiles data into quantifiable summaries, models, and forecasts for development, review, and approval of action plans. Develops recommendations to improve operational processes based on analysis. Essential Duties & Responsibilities: Create, utilize, and analyze various reports and models that require an understanding of the natural gas midstream business (gathering, compression, processing, transportation, etc.), to produce results used by operations to make effective production optimization decisions. Synthesize data and analysis into high-level presentations for management and senior management. Research and identify areas for analysis; contributes to production of summary analysis and presentation to department or executive leadership. Lead or provide input to system and/or process design and configuration. Serve as a source of expertise on reporting systems and data sources. Collaborate with department management and recommend specific actions in response to analysis, follow-up on recommended action plans. Minimum Education & Experience: Bachelor's degree. Associate Analyst - 0 - 2 years of related experience Analyst - 2 - 5 years related experience Sr Analyst - 5 - 8 years of related experience MBA or other professional certificates/advanced degrees, particularly related to mathematics, statistics, computer science, data science, or quantitative disciplines are preferred. Knowledge, Skills, Abilities: Ability to distill complex data into concise and easily understood concepts and recommendations. Good quantitative modeling skills. Good understanding of statistical modeling and simulation. Good understanding of advanced statistical techniques and concepts (regression, probabilities, statistical tests etc.) Experience with one or more programming languages (SQL, Python, R etc.) to extract and manipulate data and draw insights from large data sets Strong analytical skills and experience; ability to recognize, analyze and solve complex problems. Ability to distill data and analysis into high-level reports and summaries. Ability to discern data inaccuracies through technical experience and knowledge. Ability to apply principles of logical thinking to define problems, collect data, establish facts and draw conclusions. Strong oral and written communication skills with the ability to communicate at all levels of the organization. Strong interpersonal and presentation skills.

Are you interested in joining our team? Chat with our digital assistant to learn more about our company and apply right from your mobile device! Text ETP to 25000 to get started or apply through this web posting if you prefer. Energy Transfer, recogn Data Analyst, Analyst, Operations, Technology, Data, Skills

Energy transfer Interview Questions

Energy transfer Interview Guides

Energy transfer Interview Questions

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