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Suppose there exists a new airline named Jetco that flies domestically across North America. Jetco recently had a study commissioned that tested the boarding time of every airline, and it came out that Jetco had the fastest average boarding times of any airline.

What factors could have biased this result, and what would you look into?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

Boarding Times Bias

A new airline came out as the fastest average boarding times compared to other airlines.  What factors could have biased this result and what would you look into?

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

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?

A-Line Staffing Solutions Salaries by Position

<h3>Job Description</h3><div>Job Description<div>Title: Business Analyst VLocation: Lansing, MI (2-days onsite, 3-days remote Hybrid)Note: This role is NOT open to C2C or 3rd party candidatesWe are looking for a Business Analyst V to provide excellent customer service, supporting both project and work request needs. This person will have the opportunity to join in-flight projects focused on implementing new IT solutions to provide increased efficiencies and public support. These IT solutions leverage current technologies and include working with subject matter experts, vendors, and the public. Key responsibilities include being the liaison between the client and project stakeholders, as well as providing expert facilitation and elicitation to help develop strategy and requirements for future enhancements and related work projects. In addition, as part of the overall support for Agency Partners, this person will be a critical member of the client Agency Services Business Analyst Team, participating in various related work requests and contributing to the operational activities of the BA team. The ideal candidate for this role will possess strong process experience, strong facilitator experience for requirements elicitation, and experience with gap fit analysis and requirements refinement for inflight projects.Customer service and being a champion to ease agency compliance with client policies and practices are key performance expectations for this person. They must be able to quickly gain a working understanding of applicable constraints and enablers, and help agency partners navigate them for success of projects and work requests. A common day would include attending various standing meetings for each of the projects, as well as those that include the BA team – being able to confidently speak to current activities in each, listening to understand needs, and helping to provide input that assists in meeting the objectives of the respective meetings. In addition, work will include preparing for and facilitating discussions with stakeholders to complete analysis and drive consensus for requirements and priorities. Session outcomes will be captured in notes, specification documents, and/or user stories.We welcome candidates that are self-directed, well organized, confident in their ability to build relationships, quick to come up to speed on new assignments, and who are flexible and adaptable to changing needs and/or direction.At the discretion of the resource manager, this position may include remote work, but the candidate should plan to be available to report to a Lansing, MI job location in accordance with the client's onsite work schedule (currently, 2-days onsite per week).Job Duties:<ul><li>Facilitate requirements elicitation meetings</li><li>Review, analyze, and evaluate business systems and user needs</li><li>Formulate systems to parallel overall business strategies</li><li>Prepare solution options, risk identification, and financial analyses such as cost/benefit, ROI, buy/build, etc.</li><li>Write detailed description of user needs, program functions, and steps required to develop or modify computer programs</li><li>Prepare and document functional and technical specifications for reporting and data warehouse work</li><li>Assist with business warehouse/intelligence support and enhancements</li><li>Develop RFPs</li><li>Assist in the deployment and management of end-user reporting tools and platforms</li><li>Work with IT and business project teams to understand reporting and data warehousing requirements, and propose solutions</li><li>Document and provide knowledge transfer to the rest of the Enterprise Reporting Team for all solutions</li></ul>Job Qualifications:<ul><li>A minimum of 7 years of experience conducting business process review, requirements elicitation, and documentation</li><li>A minimum of 5 years of experience developing and/or managing user stories in Agile development project(s)</li><li>A minimum of 2 years of experience working directly with senior management in facilitating discussions to determine strategy, develop road maps, and/or gain consensus to resolve opposing positions</li><li>A minimum of 2 years of experience supporting the development of or compliance to statement of work and/or other work agreements/contracts</li><li>A minimum of 2 years of experience working on projects developing/implementing IT solutions for public use</li><li>A minimum of 1 year of experience working on IT infrastructure projects</li><li>A minimum of 1 year of experience working with programs governed by state and/or federal regulations</li><li>Experience with business process reengineering, identifying new applications of technology to business problems to make business more effective</li><li>Familiarity with industry standards (including Legacy, Core, and Emerging technologies), business process mapping, and reengineering</li><li>Knowledge of commonly used concepts, practices, and procedures</li><li>Familiarity with relational database concepts and client-server concepts</li><li>Ability to rely on experience and judgment to plan and accomplish goals</li><li>Ability to work under general supervision, typically reporting to a Project Manager</li><li>Creativity and latitude in performing a variety of tasks</li></ul>Note: This role is NOT open to C2C or 3rd party candidates</div></div>

Job Title: Business Analyst Location: Grand Rapids, MI Salary: $75,000 - $85,000 Job Summary As a Business Analyst, you will serve as a critical link between business needs and IT solutions, driving the development of innovative technology solutions and ensuring the delivery of high-quality software. You will work collaboratively with development teams, vendors, and internal stakeholders to resolve issues, implement improvements, and support business operations. Key Responsibilities <ul><li> Stakeholder Collaboration: Act as the primary liaison between business units, IT teams, and vendors. Understand and articulate business needs to develop effective technology solutions. </li><li> Requirements Analysis: Gather and analyze business requirements through interactions with internal customers, translating them into detailed technical specifications. </li><li> Solution Design: Partner with IT and development teams to design and implement solutions that align with business objectives and improve operational efficiency. </li><li> Project Management: Oversee multiple projects, ensuring they meet business requirements, timelines, and quality standards. Coordinate tasks and manage priorities to drive project success. </li><li> Process Optimization: Evaluate existing business processes to identify areas for enhancement and recommend technology solutions to optimize performance. </li><li> Communication & Documentation: Lead meetings, prepare comprehensive documentation, and present findings and updates to stakeholders to ensure clarity and alignment. </li><li> Vendor Interaction: Work with external vendors to assess new products, address issues, and ensure that vendor solutions meet organizational needs. </li><li> Performance Tracking: Monitor project deliverables, track progress, and ensure timely completion of initiatives while maintaining high standards of quality. </li><li> Support & Troubleshooting: Provide expert support for technical issues, working closely with support teams to resolve problems and maintain system stability. </li></ul>

<h3>Job Description</h3><div>Job Description<div>Title: GIS Data Architect Rate: $65/hr Location: Lansing, MINote: This is a contract on W2. THIS IS NOT OPEN TO C2C. Position Description:This position will work with Enterprise Application Architect and Enterprise Data Architect. The duty of this position involves understanding the data collected. It also includes identifying the differences and driving towards accuracy, standardization, and synchronization. This position will assist the annual migration of applications while working towards the new and improvised migration process. This position will participate in key meetings. Experience Required:<ul><li>A minimum of 5 years of experience in GIS-IT and enterprise data architecture.</li><li>Minimum of 2 years integrating GIS systems built on relational databases with other applications (built in-house and vendor). Ability to quickly comprehend the GIS needs of applications and develop smart data solutions to deliver the data.</li></ul> Skillsets Required:<ul><li>Expert level experience with ESRI ArcGIS products such as ArcCatalog, ArcMap or ArcPro.</li><li>Experience building model data workflows to extract, transform and load GIS data using ArcGIS Model Builder is a must. (Experience on Spatial ETL tools such as Safe FME will be a plus.)</li><li>Experience using the ESRI Roads and Highways Database and ESRI Versioned/non-Versioned Datasets.</li><li>Knowledge in Python Programming using the ArcPy and ArcGIS Python API.</li><li>Demonstratable experience in building GIS integration capabilities (feature or web service based) with applications.</li><li>Knowledge and proven skills in MS SQL Server Spatial and Oracle Spatial.</li><li>Excellent communication skills to collaborate at all levels of the organization.</li></ul> If you think this position is a good fit for you, please reach out to me - feel free e-mail me, or apply to this posting! Andrew Torchine Atorchine@alinestaffing.com</div></div>

<h3>Job Description</h3><div>Job Description<div>Title: AWS Data Engineer Rate: $50/hr Location: Charlotte, NCNote: This is a contract on W2. THIS IS NOT OPEN TO C2C. Top Skills:<ul><li>Experience with AWS product categories like Analytics, Application Integration, Compute, Database, Serverless;</li><li>Experience with Snowflake;</li><li>Development experience using AWS;</li><li>Validated knowledge of successful design, architecture and development using AWS Cloud technologies.</li><li>Must have excellent communication skills, collaborative mindset, Team player, self-starter who will take initiative, able to work in a matrix environment across business lines.</li></ul> Job Description:This associate will be responsible to research and conduct POCs to ensure solutions are built in alignment with platform principles and standards and drive the architecture for key cross team/cross product development projects (via architecture/design documents and developing code key modules). The Work Itself:<ul><li>Developing data integration architectures and define architecture standards & guidelines (architecture and design patterns)</li><li>Defines deployment topology by working with peers across the technology organization.</li><li>Optimizes use of Ally’s Platform and technologies.</li><li>Work with Business and delivery partners to understand future requirements and implications for architecture</li><li>Identify architecture solution alternatives, driving business requirements, and availability of new technologies</li><li>Identify new technologies and tools to support architecture(s) and determine architectural roadmaps</li><li>Encourage early adoption of tools and architecture across the organization</li><li>Review solutions and projects to ensure they are consistent with standard methodologies in data and analytics</li></ul> Primary Skills:<ul><li>Bachelor’s Degree in a related field (Computer Science, AI/ML).</li><li>2 to 4 years of IT and business/industry development experience</li><li>Knowledge of data standards (security, ingestion, warehousing, storage)</li><li>Validated knowledge of successful design, architecture and development using AWS Cloud technologies.</li><li>Experience with AWS product categories like Analytics, Application Integration, Compute, Database, Serverless.</li><li>Experience with Snowflake</li><li>Experience with AI/ML</li><li>Collaborate with Agile teams to recommend the right architectures with high quality and software standard methodologies</li><li>Strong communication skills.</li></ul> Nice to have:<ul><li>Experience with One or more data Integration Technologies (Matillion, Pentaho, Datastage, etc.).</li><li>API’s, Apigee, Developer Portals. Expertise in JSON, RESTful services, and similar related tech</li><li>Expertise in R, Python and predictive analytics.</li><li>Containers: Docker, Kubernetes, OpenShift, Ansible, Nexus, Software defined networking.</li><li>DevOps/DevSecOps: Chef, Puppet, Jenkins, Packer, Git, GitHub</li></ul> Mandatory Skills:AWS Data Engineer, Snowflake Data Engineer If you think this position is a good fit for you, please reach out to me - feel free e-mail me, or apply to this posting! Andrew Torchine Atorchine@alinestaffing.com</div></div>

Title: Business Analyst V Location: Lansing, MI (2-days onsite, 3-days remote Hybrid) Note: This role is NOT open to C 2 C or 3rd party candidates We are looking for a Business Analyst V to provide excellent customer service, supporting both project Business Analyst, Analyst, Business, Business Systems, IT, Staffing, Technology, Support

.NET Developer This is a REMOTE opportunity; This is NOT a C2C Position We are currently seeking an Advanced Software Engineer in the Software Development department. The Advanced Software Engineer plays a critical role in the delivery of high-quality products to the healthcare industry. A successful candidate will be able to demonstrate all essential functions to effectively design and construct modern software systems utilizing diverse technology sets while working within and across cross functional and geographically dispersed teams. This position is a remote opportunity. Primary Responsibilities: Participate in the development of healthcare/business related applications. Work with Product Owners and teams to drive features and specifications, architecture design, implementation, and other software development responsibilities. Translate software requirements into a fully functional software solutions. Participate in all phases of software development life cycles and the activities that occur within lifecycles. Create, use, and promote the use of development frameworks, tools, methodologies, and procedures to reduce future coding efforts and increase functional consistency. Knowledgeable of strong coding practices; implements logical database designs, logical data models and relational data definitions in support of corporate and customer information systems requirements. Thorough understanding of Object-Oriented Programming Principles and design patterns. Develop and maintain technical documentation. Required Skills: Desire and able to quickly learn new skills. Excellent analytical, programming, and troubleshooting skills. Communicate effectively with all levels of the organization. Able to thrive in a fast-paced, client-focused, changing environment. Able to work independently and be self-directed. 2+ years developing/deploying software in Azure. Experience with container technology framework (Docker/Kubernetes) Establish Cl/CD pipelines using Azure DevOps Experience with Source control using GIT Experience developing REST APls using the .NET framework, and consuming third-party REST API services. Well-versed in Design Patterns and can point to specific instances where various design patterns were employed. Experience with DevOps concepts including Continuous Integration, Continuous Deployment and release automation Advanced experience in .NET application development using ASP.NET and C# or advanced experience in other languages such as java, ruby, go, etc. Advanced experience in SQL queries Relational Database Experience (Oracle, SQL Server, MySQL, PostgreSQL) Preferred Skills: Hands-on experience with microservices and infrastructure as code Authentication and authorization using Active Directory (on-prem and Azure) Experience in a LINUX environment Application Development via Java, Python, or Go NoSQL skills and experience Experience in Agile or Lean projects Experience or training in artificial intelligence techniques Experience in Health Care Industry Required Experience: Bachelors degree, Computer Science, or related field highly preferred 3+ years of Professional Software Development experience with good knowledge of Software Development Methodologies and processes. If you think this position is a good fit, please reach out to me - feel free to call, text, e-mail, or apply to this posting! Brett Middleton bmiddleton@alinestaffing.com

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A-Line Staffing Solutions Interview Questions

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