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George Mason University Interview Questions

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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

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

George Mason University Salaries by Position

Department: Information TechnologyClassification: Info Technology Spec 1Job Category: Classified StaffJob Type: Full-TimeWork Schedule: Full-time (1.0 FTE, 40 hrs/wk)Location: Fairfax, VAWorkplace Type: Hybrid EligiblePay Band: 04Salary: Salary commensurate with education and experienceCriminal Background Check: YesAbout the Department:ITS is Mason's central IT organization. We provide IT resources, systems, services, and tools to the university community. Enterprise Applications Support & Development which includes web development, applications development/support (custom .Net, Java, and third-party), and workflow/robotic process automation.About the Position:The Application Business Analyst evaluates and documents requests for new automated workflows that will enable university efficiency. The Analyst works closely with the Workflow Team Manager, other team members, and university offices following team best practices and standards to create requirements documentation, perform alpha testing, and assist with user acceptance testing.Responsibilities:Facilitates Proper Requirement Gathering Before Development Starts* Regularly meets with client(s) and subject matter expert(s) to properly gather all requirements; and* Fully documents all the requirements in a process design document to be used by developers.Performs Initial (Alpha) Testing* Performs alpha testing of created workflow application to ensure it matches given requirements and catch any issues; and* Reports deviations from original requirements, bugs and issues to developer for quick fix before the user testing starts.Works Closely With Client During User Acceptance Testing Phase* Demos the newly created application to client to increase familiarity before user testing starts; and* Sets up and monitors a Scope Change document to be used by client to document their testing feedback and any possible scope changes.Creates Final Documents With the Help of Developers and Clients Once the Project is Done* Helps developers create technical document to be used for future maintenance;* Helps client create a user guide to be used by general users of the workflow application;* Follows up with client to get final sign off document; and* Makes sure all related documents are properly stored in the correct folder for future reference.Required Qualifications:* Associate's degree in related field;* Experience in creating technical documentations;* Experience as an Application Analyst working with clients and developers;* Experience and familiarity with software testing; and* Good working knowledge as an application business analyst creating application requirements and involvement during development life cycle.Preferred Qualifications:* Bachelor's degree in related field;* Experience within the higher education industry;* Experience with Ellucian Banner; and* Ability to create process design document based on client's need.Instructions to Applicants:For full consideration, applicants must apply for Application Business Analyst at https://jobs.gmu.edu/. Complete and submit the online application to include three professional references with contact information, and provide a Cover Letter/Letter of Intent with Resume for review.Posting Open Date: October 16, 2024Posting Close Date: November 1, 2024Open Until Filled: No

Application Business Analyst 10001819 Fairfax, VA Classified Staff Opening on: Oct 16 2024 Closing at: Nov 1 2024 at 23:55 EDT Add to favorites Favorited View favorites Department: Information Technology Classification: Info Technology Spec 1 Job Category: Classified Staff Job Type: Full-Time Work Schedule: Full-time (1.0 FTE, 40 hrs/wk) Location: Fairfax, VA Workplace Type: Hybrid Eligible Pay Band: 04 Salary: Salary commensurate with education and experience Criminal Background Check: Yes About the Department: ITS is Mason's central IT organization. We provide IT resources, systems, services, and tools to the university community. Enterprise Applications Support & Development which includes web development, applications development/support (custom .Net, Java, and third-party), and workflow/robotic process automation. About the Position: The Application Business Analyst evaluates and documents requests for new automated workflows that will enable university efficiency. The Analyst works closely with the Workflow Team Manager, other team members, and university offices following team best practices and standards to create requirements documentation, perform alpha testing, and assist with user acceptance testing. Responsibilities: Facilitates Proper Requirement Gathering Before Development Starts Regularly meets with client(s) and subject matter expert(s) to properly gather all requirements; and Fully documents all the requirements in a process design document to be used by developers. Performs Initial (Alpha) Testing Performs alpha testing of created workflow application to ensure it matches given requirements and catch any issues; and Reports deviations from original requirements, bugs and issues to developer for quick fix before the user testing starts. Works Closely With Client During User Acceptance Testing Phase Demos the newly created application to client to increase familiarity before user testing starts; and Sets up and monitors a Scope Change document to be used by client to document their testing feedback and any possible scope changes. Creates Final Documents With the Help of Developers and Clients Once the Project is Done Helps developers create technical document to be used for future maintenance; Helps client create a user guide to be used by general users of the workflow application; Follows up with client to get final sign off document; and Makes sure all related documents are properly stored in the correct folder for future reference. Required Qualifications: Associate's degree in related field; Experience in creating technical documentations; Experience as an Application Analyst working with clients and developers; Experience and familiarity with software testing; and Good working knowledge as an application business analyst creating application requirements and involvement during development life cycle. Preferred Qualifications: Bachelor's degree in related field; Experience within the higher education industry; Experience with Ellucian Banner; and Ability to create process design document based on client's need. Instructions to Applicants: For full consideration, applicants must apply for Application Business Analyst at https://jobs.gmu.edu/. Complete and submit the online application to include three professional references with contact information, and provide a Cover Letter/Letter of Intent with Resume for review. Posting Open Date: October 16, 2024 Posting Close Date: November 1, 2024 Open Until Filled: No

Research Scientist Job no: 10001764 Work type: Research Staff Location: Fairfax, VA, Hybrid Eligible Categories: Default Department: College of Science Classification: Research Staff 12-month Job Category: Research Staff Job Type: Full-Time Work Schedule: Full-time (1.0 FTE, 40 hrs/wk) Location: Fairfax, VA Workplace Type: Hybrid Eligible Salary: Salary commensurate with education and experience Restricted: Yes Criminal Background Check: Yes About the Department: The Center for Collision Safety and Analysis (CCSA) at George Mason University brings together a strong and richly experienced team of scientists and engineers focused on using advanced technology to understand collisions involving transport vehicles and to develop means to avoid or mitigate them to enhance safety and security. CCSA is associated with the College of Science at George Mason University. The mission of the Center for Collision Safety and Analysis is to advance collision safety though scientific research using sophisticated computational methods that provide a means to establish a sounder understanding of collision dynamics, likely effects on the users, vehicles, and infrastructure system elements, and potential effectiveness of mitigation options. In addition to the scientific and engineering activities, the operation of CCSA includes interactions with federal government agencies, the National Academy of Science, industrial research sponsors, and other educational and research institutes/universities, as well as other units (colleges and research centers) within Mason. CCSA also operates an experimental facility, the Federal Outdoor Impact Laboratory (FOIL), at the US Department of Transportation. George Mason University College of Science (Mason Science) is committed to advancing access, justice, equity, diversity, and inclusion (AJEDI) throughout our STEM community, including within our hiring and retention practices. At Mason Science, our values include fostering an organizational culture that promotes Anti-Racism, belonging, respect, and civility. We believe that a diversity of opinions, cultures, and perspectives is what provides vibrancy, innovation and growth to an academic community. By prioritizing inclusive excellence in academics, teaching, research, and global engagement, we strive to attract a diverse pool of faculty and staff who exemplify the Mason Science mission and vision. About the Position: The Research Scientist provides the additional needed support to the department to conduct sponsored research projects. The position is responsible for conducting sponsored research in transportation safety, developing material and computer simulation models, developing vehicle and roadside hardware models, and carrying out simulation analysis for vehicle and highway safety for vehicle applications. Responsibilities: <ul><li>Manages the development process of finite element models in the Vehicle Digitizing Lab; </li><li>Supervises and conducts overall processes including scheduling, vehicle disassembling, scanning and geometry cleaning, meshing and model assembling, material testing and characterizing, etc;</li><li>Performs the validation and verification of FE vehicle models;</li><li>Conducts simulations of various regulatory crash modes to improve the validity of FE models by comparing them with crash tests;</li><li>Carries out sponsored research related to simulations, design optimization, material model development, new design concept and improvement, etc;</li><li>Builds the databases of simulation and test outputs, FE models of vehicles, roadside hardware, material models, etc;</li><li>Manages FE models and material models; and</li><li>Develops databases to manage FE models and Material models. </li></ul> Required Qualifications: <ul><li>Bachelor's degree in related field;</li><li>At least 10 years of experience in transportation safety, developing material and computer simulation models, developing vehicle and roadside hardware models, and carrying out simulation analysis for vehicle and highway safety for vehicle applications;</li><li>Good knowledge of transportation safety and testing standards;</li><li>Good skills with finite element pre- and post-processors (e.g., HyperMesh, LS-PrePost, etc); and</li><li>Excellent abilities in using Finite Element analysis and modeling, specifically using LS-DYNA.</li></ul> Preferred Qualifications: <ul><li>Master's degree in related field;</li><li>Over 10 years of experience in vehicle safety engineering for vehicle structure design and occupant safety and a background in Solid Mechanics;</li><li>Experience generating 2D and 3D drawings using CAD software (e.g., AutoCAD, SOLIDWORKS, etc.);</li><li>Experience working in a collaborative team environment to develop creative solutions to complex challenges as well as the ability to work independently;</li><li>Familiarity with the latest transportation safety research areas, concepts, practices, procedures, and problem-solving techniques;</li><li>Knowledge in the behavior, failure, and numerical models of solids such as metals, soils and concrete; and</li><li>Good verbal and written communication skills, especially with technical reports.</li></ul> Instructions to Applicants: For full consideration, applicants must apply for Research Scientist at https://jobs.gmu.edu/. Complete and submit the online application to include three professional references with contact information, and provide a CV for review. Posting Open Date: September 26, 2024 For Full Consideration, Apply by: October 10, 2024 Open Until Filled: Yes Advertised: 26 Sep 2024 Eastern Daylight Time Applications close:

Application Business AnalystJob no: 10001819 Work type: Classified Staff Location: Fairfax, VA, Hybrid Eligible Categories: DefaultDepartment: Information TechnologyClassification: Info Technology Spec 1Job Category: Classified StaffJob Type: Full-TimeWork Schedule: Full-time (1.0 FTE, 40 hrs/wk)Location: Fairfax, VAWorkplace Type: Hybrid EligiblePay Band: 04Salary: Salary commensurate with education and experienceCriminal Background Check: YesAbout the Department:ITS is Mason's central IT organization. We provide IT resources, systems, services, and tools to the university community. Enterprise Applications Support & Development which includes web development, applications development/support (custom .Net, Java, and third-party), and workflow/robotic process automation.About the Position:The Application Business Analyst evaluates and documents requests for new automated workflows that will enable university efficiency. The Analyst works closely with the Workflow Team Manager, other team members, and university offices following team best practices and standards to create requirements documentation, perform alpha testing, and assist with user acceptance testing.Responsibilities:Facilitates Proper Requirement Gathering Before Development Starts Regularly meets with client(s) and subject matter expert(s) to properly gather all requirements; andFully documents all the requirements in a process design document to be used by developers.Performs Initial (Alpha) TestingPerforms alpha testing of created workflow application to ensure it matches given requirements and catch any issues; andReports deviations from original requirements, bugs and issues to developer for quick fix before the user testing starts. Works Closely With Client During User Acceptance Testing PhaseDemos the newly created application to client to increase familiarity before user testing starts; andSets up and monitors a Scope Change document to be used by client to document their testing feedback and any possible scope changes. Creates Final Documents With the Help of Developers and Clients Once the Project is DoneHelps developers create technical document to be used for future maintenance;Helps client create a user guide to be used by general users of the workflow application;Follows up with client to get final sign off document; andMakes sure all related documents are properly stored in the correct folder for future reference. Required Qualifications:Associate's degree in related field;Experience in creating technical documentations;Experience as an Application Analyst working with clients and developers;Experience and familiarity with software testing; andGood working knowledge as an application business analyst creating application requirements and involvement during development life cycle.Preferred Qualifications:Bachelor's degree in related field;Experience within the higher education industry;Experience with Ellucian Banner; andAbility to create process design document based on client's need.Instructions to Applicants: For full consideration, applicants must apply for Application Business Analyst at https://jobs.gmu.edu/. Complete and submit the online application to include three professional references with contact information, and provide a Cover Letter/Letter of Intent with Resume for review. Posting Open Date: October 16, 2024Posting Close Date: November 1, 2024Open Until Filled: NoAdvertised: 16 Oct 2024 Eastern Daylight Time Applications close: 01 Nov 2024 Eastern Daylight Time

George Mason University Interview Questions

George Mason University Interview Guides

George Mason University Interview Questions

George Mason University Salaries by Position

George Mason University Opening Jobs