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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

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?

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Research Scientist Pay Rate $45.00/hour-$47.50/hour Onsite: San Diego, CA Duration 1 year assignment s a Research Scientist, you will play an important role in our growing team, supporting research needs as well as laboratory organization. This position offers a great opportunity to be a part of the early scientific team building different therapeutic modality. The ideal candidate will demonstrate attention to detail, ability to work efficiently and collaboratively, a desire to learn, and be adaptable to thrive in a dynamic team environment. Qualifications Education: •Bachelor's Degree with minimum 3 years of academic or industry experience Required Skills •Contribute to lab administration and organization through ordering, managing inventory, preparation of buffers and reagents •Perform standard DNA-, and protein-based procedures such as plasmids prep, gel electrophoresis •Execute tissue culture-based experiments, including maintaining and transfecting mammalian cell lines •Support the execution of antibody production with the opportunity to learn antibody therapeutics. •Support the characterization antibodies biophysically. •Document work in a timely fashion in electronic lab notebook •LOCAL candidates for this role Optional Skills (preferred): •Mass spectrometry •AKTA-based purification •Cloning techniques Benefits: (employee contribution) •Health insurance •Health savings account •Dental insurance •Vision insurance •Flexible spending accounts •Life insurance •Retirement plan ll qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Business Analyst - Data Strategy and Enablement Location: Irving, TX Pay: $33/ hr Overview: Gartner is seeking a Business Analyst to support business processes in Enterprise, Account, and Person data management, focusing on large-scale data cleanup and quality improvement initiatives. Key Responsibilities: <ul> <li> Data Quality & Insights: <ul> <li> Drive data quality initiatives to enhance client data accuracy across critical business processes.</li> <li> Curate data insights to improve data transparency and value for Gartner.</li> </ul> </li> <li> Collaboration & Documentation: <ul> <li> Work with business and technical teams (on-site and offshore) to create data flow diagrams, business requirements, functional requirements, user stories, and user acceptance tests.</li> <li> Lead data workshops with stakeholders to develop requirements, execution processes, and manage cross-team dependencies.</li> </ul> </li> <li> Requirements Analysis: <ul> <li> Understand relevant business areas, technical options, limitations, and risks to recommend solutions and shape requirements.</li> <li> Break down complex workflows into understandable components for all levels of stakeholders.</li> </ul> </li> <li> Data Review & Quality Assurance: <ul> <li> Periodically review data records to ensure quality and provide actionable insights.</li> <li> Review team outputs to verify requirements are met; define and execute test cases.</li> </ul> </li> <li> Support: <ul> <li> Support other business analysts, process owners, and project managers to drive business initiatives.</li> </ul> </li> </ul> Qualifications: <ul> <li> Experience: <ul> <li> 3+ years as a Business/Data Analyst; experience in Data Warehouse, Master Data Management, or Analytics is a plus.</li> <li> Familiarity with data governance and Scrum/Agile methodologies is a strong advantage.</li> </ul> </li> <li> Skills: <ul> <li> Excellent communication skills (technical and non-technical audiences).</li> <li> Strong analytical and problem-solving skills, with the ability to document business processes and requirements clearly.</li> <li> dvanced SQL skills required.</li> <li> Proficiency in MS Excel, MS Word, Google Suite, MS Visio, Lucidchart, JIRA, and Confluence.</li> <li> Knowledge of data analysis tools and experience with business intelligence/visualization tools (e.g., Tableau, Power BI) is a plus.</li> </ul> </li> </ul> Benefits (employee contribution): <ul> <li> Health insurance </li> <li> Health savings account </li> <li> Dental insurance </li> <li> Vision insurance </li> <li> Flexible spending accounts </li> <li> Life insurance </li> <li> Retirement plan </li> </ul> ll qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Business Analyst - Data Strategy and Enablement Focus: Government, Public Sector, and Education Data Location: Irving, TX, Stamford, CT, Ft Myers, FL, Washington, DC (Must be within 30 miles of the Gartner locations in any of these locations)*** Pay: $65/ hr - paid weekly Overview: Join Gartner's Data Strategy and Enablement group as a Business Analyst, supporting business processes for Government, Public Sector, and Education data management. This role emphasizes data quality improvements and organizational hierarchy structures. Key Responsibilities: <ul> <li> Data Quality & Organization: <ul> <li> Lead initiatives to enhance the accuracy of Government, Public Sector, and Education account data, with a focus on organizational hierarchies.</li> </ul> </li> <li> Cross-functional Collaboration: <ul> <li> Work with both on-site and offshore business and technical teams to create data flow diagrams, business requirements, functional requirements, user stories, and user acceptance tests.</li> </ul> </li> <li> Requirements Analysis: <ul> <li> Understand relevant business areas, technical constraints, costs, and risks. Communicate trade-offs, recommend solutions, and suggest alternatives to refine requirements.</li> </ul> </li> <li> Data Workshops & Quality Assurance: <ul> <li> Lead data workshops with stakeholders to develop requirements and execution processes, managing dependencies across teams.</li> <li> Review data records periodically to ensure quality, curating insights to enhance data transparency and value.</li> </ul> </li> <li> Documentation & Testing: <ul> <li> Ensure process and procedural adherence, maintain documentation, review team outputs, and define and execute test cases.</li> <li> Support other business analysts, process owners, and project managers in driving key business initiatives.</li> </ul> </li> </ul> Qualifications:<ul> <li> Experience: <ul> <li> 6+ years as a Business/Data Analyst; experience in Data Warehouse, Master Data Management, or Analytics environments preferred.</li> <li> Knowledge of Government/Public sector structures required; knowledge of Education organizations a plus.</li> <li> Data governance experience strongly preferred.</li> </ul> </li> <li> Skills: <ul> <li> Excellent communication with both technical and non-technical teams.</li> <li> Strong analytical, problem-solving, and strategic thinking skills to effectively document business processes, user, and data requirements.</li> <li> Advanced SQL skills required.</li> <li> Proficient in MS Excel, MS Word, Google Suite, MS Visio, Lucidchart, JIRA, and Confluence.</li> <li> Familiarity with data analysis tools and experience with business intelligence/visualization tools (Tableau, Power BI) is a plus.</li> <li> Knowledge of Scrum/Agile methodology is beneficial.</li> </ul> </li> </ul> Benefits (employee contribution): <ul> <li> Health insurance </li> <li> Health savings account </li> <li> Dental insurance </li> <li> Vision insurance </li> <li> Flexible spending accounts </li> <li> Life insurance </li> <li> Retirement plan </li> </ul> ll qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Business Analyst - Data Strategy and Enablement Location: Irving, TX Pay: $33/ hr Overview: Gartner is seeking a Business Analyst to support business processes in Enterprise, Account, and Person data management, focusing on large-scale data cleanup and quality improvement initiatives. Key Responsibilities: <ul> <li> Data Quality & Insights: <ul> <li> Drive data quality initiatives to enhance client data accuracy across critical business processes.</li> <li> Curate data insights to improve data transparency and value for Gartner.</li> </ul> </li> <li> Collaboration & Documentation: <ul> <li> Work with business and technical teams (on-site and offshore) to create data flow diagrams, business requirements, functional requirements, user stories, and user acceptance tests.</li> <li> Lead data workshops with stakeholders to develop requirements, execution processes, and manage cross-team dependencies.</li> </ul> </li> <li> Requirements Analysis: <ul> <li> Understand relevant business areas, technical options, limitations, and risks to recommend solutions and shape requirements.</li> <li> Break down complex workflows into understandable components for all levels of stakeholders.</li> </ul> </li> <li> Data Review & Quality Assurance: <ul> <li> Periodically review data records to ensure quality and provide actionable insights.</li> <li> Review team outputs to verify requirements are met; define and execute test cases.</li> </ul> </li> <li> Support: <ul> <li> Support other business analysts, process owners, and project managers to drive business initiatives.</li> </ul> </li> </ul> Qualifications:<ul> <li> Experience: <ul> <li> 3+ years as a Business/Data Analyst; experience in Data Warehouse, Master Data Management, or Analytics is a plus.</li> <li> Familiarity with data governance and Scrum/Agile methodologies is a strong advantage.</li> </ul> </li> <li> Skills: <ul> <li> Excellent communication skills (technical and non-technical audiences).</li> <li> Strong analytical and problem-solving skills, with the ability to document business processes and requirements clearly.</li> <li> Advanced SQL skills required.</li> <li> Proficiency in MS Excel, MS Word, Google Suite, MS Visio, Lucidchart, JIRA, and Confluence.</li> <li> Knowledge of data analysis tools and experience with business intelligence/visualization tools (e.g., Tableau, Power BI) is a plus.</li> </ul> </li> </ul> Benefits (employee contribution): <ul> <li> Health insurance </li> <li> Health savings account </li> <li> Dental insurance </li> <li> Vision insurance </li> <li> Flexible spending accounts </li> <li> Life insurance </li> <li> Retirement plan </li> </ul> ll qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Note: Key selection criteria is seasoned BA, to handle the business team with good communication skills and Agile methodology. SKILLS / EXPERIENCE REQUIRED <ul> <li> Education: Bachelor's degree in computer science, Information Systems, or Finance </li> <li> Role Specific Experience: 8+ years of relevant technical and business work experience with concepts of finance and accounting , Banking & Financial domain experience, along with knowledge of risk management, familiarity </li> <li> Proficiency in MS Excel </li> <li> Experience in defining and implementing technology solutions for a major financial institution </li> <li> Extensive experience as a Business Analyst for a large financial institution with special emphasis on use cases, defining test cases, and providing user training and support </li> <li> Extensive experience in gathering business requirements and developing functional specifications artifacts to those methodologies </li> <li> Extensive experience with various system development lifecycle methodologies and tailoring the Solution-oriented, detailed-focused, showing strong analytical and organization skills </li> </ul> It Will be a Plus for below Skills: <ul> <li> Familiarity with relational databases / RDMS </li> <li> Experience with writing simple SQL statements (mostly SELECT - with aim to analyze datasets) </li> <li> Familiarity with any object-oriented programming language is a plus (c# preferred) </li> </ul>

Data Engineer - Lead $72.00/hr Needs to be Local in Beaverton,OR Hybrid Model Mon-Thursday, Friday WFH Establishes database management systems, standards, guidelines and quality assurance for database deliverables, such as conceptual design, logical database, capacity planning, external data interface specification, data loading plan, data maintenance plan and security policy. Documents and communicates database design. Evaluates and installs database management systems. Codes complex programs and derives logical processes on technical platforms. Builds windows, screens and reports. Assists in the design of user interface and business application prototypes. Participates in quality assurance and develops test application code in client server environment. Provides expertise in devising, negotiating and defending the tables and fields provided in the database. Adapts business requirements, developed by modeling/development staff and systems engineers, and develops the data, database specifications, and table and element attributes for an application. At more experienced levels, helps to develop an understanding of client's original data and storage mechanisms. Determines appropriateness of data for storage and optimum storage organization. Determines how tables relate to each other and how fields interact within the tables for a relational model. Bachelor/Master degree in Computer Science or related technical subject area or equivalent combination of education and experience 7+ years relevant work experience in the Data Engineering field Experience building scalable and high-performance cloud data lake solutions Experience working on technologies like Spark, Airflow Preferred platform experience of working either in Databricks/AWS for building big data pipelines. Experience with source control tools such as GitHub and related CI/CD processes Has a strong problem solving and analytical approach Proven ability to influence and communicate effectively with team members and business partners ll listed requirements are deemed as essential functions to this position; however, business conditions may require reasonable accommodations for additional task and responsibilities. Benefits:(employee contribution) •Health insurance •Health savings account •Dental insurance •Vision insurance •Flexible spending accounts •Life insurance •Retirement plan

Benefits (employee contribution): Health insurance Health savings account Dental insurance Vision insurance Flexible spending accounts Life insurance Retirement plan All qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

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