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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

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?

Bcforward Salaries by Position

SAP MM Business AnalystBCforward is currently seeking a highly motivated SAP MM Business Analyst for an opportunity in Minneapolis, MN!Position Title: SAP MM Business AnalystLocation: Minneapolis, MNAnticipated Start Date: 12/9/2024.Please note this is the target date and is subject to change. BCforward will send official notice ahead of a confirmed start date.Expected Duration: 6+ Months.Job Type: Contract, RemotePay Range: $65/hr - $75/hr.Please note that actual compensation may vary within this range due to factors such as location, experience, and job responsibilities, and does not encompass additional non-standard compensation (e.g., benefits, paid time off, per diem, etc.).Job Description: A SAP Materials Management Business Analyst with a strong background in S/4HANA and process consulting to join a high-performing team. The successful candidate will work closely with stakeholders across the organization to identify, map and implement improvements and support the production SAP S4 Hana system for Procure to Pay processes.What Will You Do?* Collaborate with business stakeholders to understand their Procure to Pay processes, identify pain points and improvement opportunities.* Provide process consulting to business stakeholders and identify areas of business process optimization and improvement.* Work with technical teams to design and configure SAP S/4HANA to support optimized Procure to Pay processes.* Analyze data and system workflows to identify areas for process improvement and implement solutions.* Conduct training sessions for end-users and support them with issue resolution in MM and MM-EAM integrated areas.* Participate in the testing of Procure to Pay functionalities and ensure the quality of solutions is delivered.* Support the change management process by effectively communicating changes to impacted parties and managing change requests.* Continuously monitor and analyze Procure to Pay processes, system performance, and recommend further improvements.What Skills Should You Have?* Bachelor's or master's degree in business, Computer Science or related field* 8+ years of on hand experience in SAP MM, process mapping, configuration and implementation, integration with other SAP Modules. Process knowledge in SAP MM & EAM will be an advantage.* Experience working on at least 2 SAP S/4HANA projects with working knowledge of Fiori apps* Strong understanding of Procure to Pay business processes and process optimization* Ability to communicate effectively with technical and non-technical stakeholders at all levels of the organization.* Strong analytical and problem-solving skills, with a focus on data-driven decision making.* Experience in process consulting and change management* Excellent time management and prioritization skills with the ability to manage multiple projects simultaneously.* Experience in Waterfall / SAP Activate methodologies.Benefits:BCforward offers all eligible employees a comprehensive benefits package including, but not limited to major medical, HSA, dental, vision, employer-provided group life, voluntary life insurance, short-term disability, long-term disability, and 401k.About BCforward:Founded in 1998 on the idea that industry leaders needed a professional service, and workforce management expert, to fuel the development and execution of core business and technology strategies, BCforward is a Black-owned firm providing unique solutions supporting value capture and digital product delivery needs for organizations around the world. Headquartered in Indianapolis, IN with an Offshore Development Center in Hyderabad, India, BCforward's 6,000 consultants support more than 225 clients globally.BCforward champions the power of human potential to help companies transform, accelerate, and scale. Guided by our core values of People-Centric, Optimism, Excellence, Diversity, and Accountability, our professionals have helped our clients achieve their strategic goals for more than 25 years. Our strong culture and clear values have enabled BCforward to become a market leader and best in class place to work.BCforward is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against based on disability.To learn more about how BCforward collects and uses personal information as part of the recruiting process, view our Privacy Notice and CCPA Addendum. As part of the recruitment process, we may ask for you to disclose and provide us with various categories of personal information, including identifiers, professional information, commercial information, education information, and other related information. BCforward will only use this information to complete the recruitment process.This posting is not an offer of employment. All applicants applying for positions in the United States must be legally authorized to work in the United States. The submission of intentionally false or fraudulent information in response to this posting may render the applicant ineligible for the position. Any subsequent offer of employment will be considered employment at-will regardless of the anticipated assignment duration.Interested candidates please send resume in Word format Please reference job code 231407 when responding to this ad.

Research Scientist IV BCforward is currently seeking a highly motivated Research Scientist IV for a Onsite opportunity! Position Title: Research Scientist IV Location: Seattle, WA (Onsite) Anticipated Start Date: 11/11/2024 Please note this is the target date and is subject to change. BCforward will send official notice ahead of a confirmed start date. Expected Duration: 12 Months Job Type: Contract (>%3D30 HRS WEEKLY) Pay Range: TBD Please note that actual compensation may vary within this range due to factors such as location, experience, and job responsibilities, and does not encompass additional non-standard compensation (e.g., benefits, paid time off, per diem, etc.). Research Scientist, Quantified Wearability <ul> <li>As part of our multidisciplinary team, you will be at the forefront of developing next-generation smart and AR glasses and wearables. Your work will center on providing statistical analysis and support for ongoing projects involving 3D scan data and human factors. This role requires a blend of data analytics, statistical expertise, and human-centered design and problem-solving skills to help shape the future of wearable technology.</li> <li>You will be tasked with performing in-depth statistical analyses, writing reusable code, and creating visualizations to communicate insights. Your work will support the development of ergonomic, human-centered wearable products by analyzing large datasets and producing actionable insights that influence product design and functionality. Strong storytelling abilities will be crucial as you effectively convey complex findings to stakeholders.</li> </ul> Responsibilities: <ul> <li>Analyze data derived from 3D scanned geometry (i.e. PCA on meshes, statistical shape modeling, landmark analysis) and human factors data to produce meaningful insights that drive product design.</li> <li>Perform exploratory data analysis, identify issues in the data, and generate and test hypotheses to interpret the results of product experiments.</li> <li>Plan and execute statistical analyses for large datasets (N%3D3000+ people), focusing on wearability and fitment, use large data infrastructure</li> <li>Develop reusable analysis code in Python, or similar languages</li> <li>Improve data analysis analysis pipelines with an emphasis on scalability and stability of various deployed systems</li> <li>Design and run ergonomic and human factors research studies, utilizing methods such as experimental design, survey analysis, motion tracking, and kinematics analysis.</li> <li>Collaborate with scientists and engineers to translate research questions into analysis tools and results.</li> <li>Provide data visualization support, including dashboards and ad-hoc requests, to convey complex information to stakeholders effectively through compelling storytelling</li> <li>Participate in cross-functional collaborations, contributing to experiments, prototypes, and concepts that advance AR/VR systems.</li> </ul>Minimum Qualifications: <ul> <li>Master's degree or equivalent experience in Computer Science, Biomedical Engineering, Mechanical Engineering, Statistics, Mathematics, Human Factors, or a related field.</li> <li>2+ years of experience in conducting research and statistical analysis for novel products.</li> <li>Experience with Python and/or R</li> <li>Demonstrated ability to perform multivariate analysis (e.g., PCA on meshes, hierarchical regression modeling, machine learning) with a strong emphasis on deriving data insights from large datasets, identifying trends, and clearly presenting findings</li> <li>Experience in 3D geometry analysis, human data, and user studies.</li> </ul> Preferred Qualifications: <ul> <li>PhD or equivalent experience in Computer Science, Statistics, Engineering, or related fields.</li> <li>5+ years of experience in applied research and/or product development related to 3D geometry analysis, particularly in wearable design.</li> <li>Prior experience with computer vision, motion capture data analysis, 3D geometry (mesh processing, statistical shape modeling), FEA, and/or CAD</li> <li>Experience with Machine Learning models, deep learning frameworks, including PyTorch, and their application in 3D geometry analysis.</li> <li>Experience with large database infrastructures</li> <li>Experience with emerging technologies in AR/VR/MR or wearable technology.</li> </ul> Benefits: BCforward offers all eligible employees a comprehensive benefits package including, but not limited to major medical, HSA, dental, vision, employer-provided group life, voluntary life insurance, short-term disability, long-term disability, and 401k. About BCforward: Founded in 1998 on the idea that industry leaders needed a professional service, and workforce management expert, to fuel the development and execution of core business and technology strategies, BCforward is a Black-owned firm providing unique solutions supporting value capture and digital product delivery needs for organizations around the world. Headquartered in Indianapolis, IN with an Offshore Development Center in Hyderabad, India, BCforward's 6,000 consultants support more than 225 clients globally. BCforward champions the power of human potential to help companies transform, accelerate, and scale. Guided by our core values of People-Centric, Optimism, Excellence, Diversity, and Accountability, our professionals have helped our clients achieve their strategic goals for more than 25 years. Our strong culture and clear values have enabled BCforward to become a market leader and best in class place to work. BCforward is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against based on disability. To learn more about how BCforward collects and uses personal information as part of the recruiting process, view our Privacy Notice and CCPA Addendum. As part of the recruitment process, we may ask for you to disclose and provide us with various categories of personal information, including identifiers, professional information, commercial information, education information, and other related information. BCforward will only use this information to complete the recruitment process. This posting is not an offer of employment. All applicants applying for positions in the United States must be legally authorized to work in the United States. The submission of intentionally false or fraudulent information in response to this posting may render the applicant ineligible for the position. Any subsequent offer of employment will be considered employment at-will regardless of the anticipated assignment duration. Interested candidates please send resume in Word format Please reference job code 230712 when responding to this ad.

IT Business Analyst for Derivatives BCforward is currently seeking a highly motivated IT Business Analyst for Derivatives for an opportunity in Jersey City, NJ Position Title: IT Business Analyst for Derivatives Location: Jersey City, NJ Anticipated Start Date: ASAP Please note this is the target date and is subject to change. BCforward will send official notice ahead of a confirmed start date. Expected Duration: 12 Months. Job Type: CONTRACT, (Hybrid) Monday- Friday (5x8) Candidate who is authorized to work independently Pay Range: $50 - $55/hr. Please note that actual compensation may vary within this range due to factors such as location, experience, and job responsibilities, and does not encompass additional non-standard compensation (e.g., benefits, paid time off, per diem, etc.). Job Description: * Closely work with business partners to analyze & refine the regulatory requirements given by Federal authorities & DTCC (Business Requirements Document) and then prepare detailed Functional Requirement Document. * Translate and simplify the Business /Functional requirements into technical requirements and create user stories for the Development team to understand and implement the code. * Performs gap and feasibility analysis, recommend alternative solutions, project strategy, and deliverable prioritization. * Prepare the detailed use cases, functional scenarios, and Spec by examples. * Work closely with Developers and Operations to answer all questions & queries about the regulatory requirements. * Identify the gaps in software system from regulatory perspective and raise requirements to product owners. * Provide support to Product owner team to help guide the tech impact, story points, prioritizing, planning for all requirements. * Provide support to UAT team for end-to-end testing by providing sample test cases, use cases, actual vs expected behavior etc. Work with them to develop user acceptance tests, and log and track status of defects. Required Skills: * At least 6 - 8 years of experience of working as a BA for large, complex systems. * OTC Derivatives domain knowledge is required. * Ability to read back-end Python code and perform basic debugging is required. * Working experience / knowledge on CFTC/Dodd Frank, ESMA/EMIR, MIFID rules is preferred. * Great analytical skills and ability to deep dive into complex details and resolve issues. * Excellent written & oral communication skills. * Experience of working with AGILE methodology of software development. * Ability to prioritize, adjust, and push for completion of multiple tasks in a fast-paced organization. * Ability to problem solve, apply reason, take initiative, use judgment, and perform multiple concurrent tasks Benefits: BCforward offers all eligible employees a comprehensive benefits package including, but not limited to major medical, HSA, dental, vision, employer-provided group life, voluntary life insurance, short-term disability, long-term disability, and 401k. Keywords: [IT Business Analyst, Python, OTC Derivatives, CFTC, Dodd Frank, ESMA, EMIR, MIFID] About BCforward: Founded in 1998 on the idea that industry leaders needed a professional service, and workforce management expert, to fuel the development and execution of core business and technology strategies, BCforward is a Black-owned firm providing unique solutions supporting value capture and digital product delivery needs for organizations around the world. Headquartered in Indianapolis, IN with an Offshore Development Center in Hyderabad, India, BCforward's 6,000 consultants support more than 225 clients globally. BCforward champions the power of human potential to help companies transform, accelerate, and scale. Guided by our core values of People-Centric, Optimism, Excellence, Diversity, and Accountability, our professionals have helped our clients achieve their strategic goals for more than 25 years. Our strong culture and clear values have enabled BCforward to become a market leader and best in class place to work. BCforward is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against based on disability. To learn more about how BCforward collects and uses personal information as part of the recruiting process, view our Privacy Notice and CCPA Addendum. As part of the recruitment process, we may ask for you to disclose and provide us with various categories of personal information, including identifiers, professional information, commercial information, education information, and other related information. BCforward will only use this information to complete the recruitment process. This posting is not an offer of employment. All applicants applying for positions in the United States must be legally authorized to work in the United States. The submission of intentionally false or fraudulent information in response to this posting may render the applicant ineligible for the position. Any subsequent offer of employment will be considered employment at-will regardless of the anticipated assignment duration. Interested candidates please send resume in Word format Please reference job code 231219 when responding to this ad.

Business Analyst BCforward is currently seeking a highly motivated Business Analyst Job for an opportunity Position Title: Business Analyst Location: Nutley, NJ Anticipated Start Date: November 25th Please note this is the target date and is subject to change. BCforward will send official notice ahead of a confirmed start date. Expected Duration: 6 - 12 months Contract (with possibility of extension or conversion) Job Type: Contract, 40 HRS WEEKLY, Onsite Pay Range: $48/hr - $50/hr Please note that actual compensation may vary within this range due to factors such as location, experience, and job responsibilities, and does not encompass additional non-standard compensation (e.g., benefits, paid time off, per diem, etc.). Requirements: Business Analyst Pharma Job Description: As a Business Analyst, you will be responsible for analyzing business requirements in the commercial area (Pharma) specifically in data analytics space. These includes assessing the business model and its integration with technology, gathering, and synthesizing information. You will also be expected to collaborate with technical team, vendors and client stakeholders and contribute to key decisions. Expert proficiency in Requirements Analysis is required, Advanced proficiency in Life Sciences Commercial area, and Business Process Analysis Tools. Nice-to-have skills: 1. Knowledge on Data Kitchen Platform/SQL Responsibilities: <ul><li>Requirements Gathering: Engaging with stakeholders to collect and document business requirements related to data analytics.</li></ul> <ul><li>Data Interpretation: Analyzing complex data sets to derive insights that will help the technical team in their design</li></ul> <ul><li>Stakeholder Communication: Acting as a liaison between technical teams (data engineers) and non-technical stakeholders (e.g. management, marketing, data analytics).</li></ul> <ul><li>Process Improvement: Identifying opportunities to improve business processes through data analytics.</li></ul> <ul><li> Analyzing Business Needs: Understanding and translating business objectives into data requirements.</li></ul> <ul><li>Data Quality Assurance: Ensuring data accuracy, consistency, and reliability for analysis.</li></ul> <ul><li>Creating Documentation: Developing user stories, use cases, and process documentation to guide data projects.</li></ul> <ul><li>Testing and Validation: Collaborating with QA teams to test analytics solutions and ensure they meet business requirements.</li></ul> <ul><li>Training and Support: Providing training or support to end-users on analytics tools and insights.</li></ul> <ul><li>Continuous Improvement: Monitoring outcomes of analytics projects and recommending enhancements based on feedback and changing business needs.</li></ul> <ul><li>Collaboration: Working with data engineers/architect to ensure that the technical solutions align with business requirements.</li></ul> Benefits: BCforward offers all eligible employees a comprehensive benefits package including, but not limited to major medical, HSA, dental, vision, employer-provided group life, voluntary life insurance, short-term disability, long-term disability, and 401k. About BCforward: Founded in 1998 on the idea that industry leaders needed a professional service, and workforce management expert, to fuel the development and execution of core business and technology strategies, BCforward is a Black-owned firm providing unique solutions supporting value capture and digital product delivery needs for organizations around the world. Headquartered in Indianapolis, IN with an Offshore Development Center in Hyderabad, India, BCforward's 6,000 consultants support more than 225 clients globally. BCforward champions the power of human potential to help companies transform, accelerate, and scale. Guided by our core values of People-Centric, Optimism, Excellence, Diversity, and Accountability, our professionals have helped our clients achieve their strategic goals for more than 25 years. Our strong culture and clear values have enabled BCforward to become a market leader and best in class place to work. BCforward is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against based on disability. To learn more about how BCforward collects and uses personal information as part of the recruiting process, view our Privacy Notice and CCPA Addendum. As part of the recruitment process, we may ask for you to disclose and provide us with various categories of personal information, including identifiers, professional information, commercial information, education information, and other related information. BCforward will only use this information to complete the recruitment process. This posting is not an offer of employment. All applicants applying for positions in the United States must be legally authorized to work in the United States. The submission of intentionally false or fraudulent information in response to this posting may render the applicant ineligible for the position. Any subsequent offer of employment will be considered employment at-will regardless of the anticipated assignment duration. Interested candidates please send resume in Word format Please reference job code 231082 when responding to this ad.

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