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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

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

Datasoft Technologies Salaries by Position

IT Business Analyst 2 - Project Initiation Onsite bout the Job: <ul> <li> Duration:4 months Contract </li> <li> Location: Atlanta, GA </li> <li> Pay rate:Hourly </li> <li> Job ID: 727191 </li> </ul> Overview: Under general supervision, the IT Business Analyst (BA) analyzes enterprise-wide customer business needs & participates in the planning, design & implementation of new or enhanced systems or reporting/analysis on multiple IT development projects. Responsibilites: <ul> <li> Participates in the demand management process to assist the business in establishing business cases, scope, and requirements relating to requests for new systems or existing system changes </li> </ul> <ul> <li> Primarily support IT acquisition of products or services by developing scopes of work </li> <li> Consults with project teams and architects to identify currently know solutions or performs market research </li> <li> Gathers information/documentation from vendors or contractors </li> <li> Translates business needs into requirements and functional/non-functional specifications </li> <li> Gather, clarify/define, and document scope, business scenarios, workflows, requirements, etc. </li> <li> Conduct interviews, workshops, and JAD sessions </li> <li> Analyzes and validates business requirements and processes, identifies opportunities for process enhancement to benefit the Department, identifies gaps in information </li> <li> Uses a structured process to define priorities and opportunities and/or works with stakeholders to define the minimum viable product (MVP) and options for improvements via subsequent phases </li> <li> Produces required work artifacts </li> <li> Communicates and presents client's business requirements to implementation teams </li> <li> Creates systems models, specifications, diagrams, and charts to provide direction to developers and system architects </li> <li> Works with the team to define acceptance criteria or other metrics/performance goals for the system </li> <li> Provides status updates, completes weekly work time logs, updates work tickets weekly </li> <li> Provide estimates and target dates for task completion for incorporation into project schedules or work tickets </li> </ul> Qualifications: <ul> <li> BS/BA in a relevant discipline (Computer Science, Information Systems, Engineering, etc.) </li> <li> IT busines analysis work experience in software development, project management, or technology implementations/support </li> <li> Experience with Microsoft Office Professional, including Visio </li> <li> Experience with data and business process analysis </li> <li> Experience in developing statements/scope of work for contracting and procurement </li> <li> Work experience in reviewing software license, service, or support level agreements </li> <li> Experience with procurements or solicitations, developing scopes of work or statements of work. </li> <li> Strong analytical/technical skills, able to provide impact/risk assessments </li> <li> Excellent communication, teamwork, and collaboration skills </li> <li> Strong problem solving and organizational skills </li> <li> Detail oriented, analytical mindset </li> <li> ble to manage multiple projects/tasks at once; Results oriented and highly organized; Able to work in a fast-paced environment </li> <li> Strong interviewing, active listening, communication, presentation, moderating meetings, and interpersonal skills - influencing, negotiating, etc. </li> <li> Strong written communication skills with the ability to prepare presentations and write scope/specifications for procurement/contracting </li> <li> ble to provide portfolio or examples of scopes of work or statements of work they prepared. </li> </ul> bout our Company DataSoft Technologies is a highly recognized provider of professional IT Consulting services in the US. Founded in 1994, DataSoft Technologies, Inc. provides staff augmentation services for Information Technology and Automotive Services. Our team memberbenefits include: <ul> <li> Paid Holidays/Paid Time Off (PTO) </li> <li> Medical/Dental Insurance </li> <li> Vision Insurance </li> <li> Short Term/Long Term Disability </li> <li> Life Insurance </li> <li> 401 (K) </li> </ul>

Data Scientist
Hybrid (2 Days onsite)

About the Job
Duration: Long-term renewable contract
Location: Greenville, SC
Pay rate: Hourly
Job ID: 4907
This is a Full Time W2 position, no subcontracting or C2C.

Overview:
DataSoft Technologies, Inc. is seeking a Data Scientist to join our client in Greenville, SC. The Data Scientist accelerates and supports the ongoing activities in the field of Artificial Intelligence and Computer vision for multiple use cases for quality improvement in the area of manufacturing. Deals with large volumes of data, understands and explores data critical to company business. Drives data for future company processes and products. Works with different business units to understand the business demands with respect to Artificial Intelligence and Quality Assessment. Conducts advanced analytical tasks, designs deep learning models, data mining, and computer vision to enable company to improve its products, services and processes.

Must Have : Python, Machine Learning, Deep Learning, NLP, AWS, SQL, LLM, work with business units and develop POCs, Use Cases, and promote application of Data Science, lead trainings of business/functional users.

Responsibilities:
Analyzes business critical data and recommends improvements.
Works with large data sets consisting of predominantly images and conducts advanced analytics tasks. Assess the effectiveness and accuracy of new data sources and data gathering techniques.
Works with stakeholders throughout the organization to identify opportunities for leveraging company data to drive business solutions.
Develops custom data models and algorithms to apply to data sets.
Coordinates with different functional teams to implement models and monitor outcomes.
Develops processes and tools to monitor and analyze model performance and data accuracy.
Serves as internal consultant to other developers and engineers as needed, providing assistance in all phases of product life-cycle development.
Advises developers and engineers on latest data analytics technologies and assists the team in process matters as related to development/support and provides the necessary on the job training and development of associates/contractors within the team.
Maintains accurate, meaningful and updated technical and non-technical documentation pertaining to all aspects of area(s) of responsibility.
Performs other duties as assigned by Supervisor

Qualifications:
Bachelor degree in computer science, mathematics/statistics or related field.
Advanced degree (Masters or PhD) in computer science, mathematics/statistics or a related field (preferred).
3+ years post-university experience in advanced analytics in the field of data science, applying scientific data analytics methods preferably to automotive industry datasets.
1+ years proven experience completing projects with a set of various data sources.
Process/project management experience or training/certifications (preferred).
3+ years of knowledge in using statistical computer languages (Python, SLQL, etc) to manipulate data and draw insights from large data sets
1+ years of knowledge of a variety of machine learning techniques (clustering, decision tree learning, artificial neural networks, etc.) and their real-world advantages/drawbacks.
Intermediate knowledge of deep learning architectures (RNN, CNN, LSTM, etc.) and frameworks (Tensor flow, Keras, etc.)
3+ years of knowledge of in one or more of the following programming languages: Python, Java, C++
3+ years of knowledge and experience in Computer Science and in database technologies including SQL, Oracle, SQLServer, SAP HANA and NoSQL databases
3+ years of experience in statistical languages and tools in particular R
3+ years of experience in problem solving skills with an emphasis on product development

About our Company
DataSoft Technologies is a highly recognized provider of professional IT Consulting services in the US. Founded in 1994, DataSoft Technologies, Inc. provides staff augmentation services for Information Technology and Automotive Services. Our team member benefits include:
Paid Holidays/Paid Time Off (PTO)
Medical/Dental Insurance Group
Accident/Critical Illness Insurance
Life Insurance
401 (K)

Data Scientist Hybrid About the Job: <ul> <li>Duration: Long-term renewable contract</li> <li>Location: Greenville, SC</li> <li>Pay rate: Hourly, depending on experience</li> <li>Job ID: 4423 </li> </ul>Must be able to work on W2 with DataSoft. No C2C. Overview: Accelerates and supports the ongoing activities in the field of Artificial Intelligence and Computer vision for multiple use cases for quality improvement in the area of manufacturing. Deals with large volumes of data, understands and explores data critical to company business. Drives data for future company processes and products. Works with different company business units to understand the business demands with respect to Artificial Intelligence and Quality Assessment. Conducts advanced analytical tasks, designs deep learning models, data mining, and computer vision to enable the company to improve its products, services and processes. Responsibilities: <ul> <li>Analyzes business critical data and recommends improvements.</li> <li>Works with large data sets consisting of predominantly images and conducts advanced analytics tasks. Assess the effectiveness and accuracy of new data sources and data gathering techniques.</li> <li>Works with stakeholders throughout the organization to identify opportunities for leveraging company data to drive business solutions.</li> <li>Develops custom data models and algorithms to apply to data sets.</li> <li>Coordinates with different functional teams to implement models and monitor outcomes.</li> <li>Develops processes and tools to monitor and analyze model performance and data accuracy.</li> <li>Serves as internal consultant to other developers and engineers as needed, providing assistance in all phases of product life-cycle development.</li> <li>Advises developers and engineers on latest data analytics technologies and assists the team in process matters as related to development/support and provides the necessary on the job training and development of associates/contractors within the team.</li> <li>Maintains accurate, meaningful and updated technical and non-technical documentation pertaining to all aspects of area(s) of responsibility.</li> <li>Performs other duties as assigned Supervisor </li> </ul>Qualifications: <ul> <li>Bachelor degree in computer science, mathematics/statistics or related field.</li> <li>Advanced degree (Masters or PhD) in computer science, mathematics/statistics or a related field (preferred).</li> <li>3+ years post-university experience in advanced analytics in the field of data science, applying scientific data analytics methods preferably to automotive industry datasets.</li> <li>1+ years proven experience completing projects with a set of various data sources.</li> <li>3+ years of knowledge in using statistical computer languages (Python, SLQL, etc) to manipulate data and draw insights from large data sets</li> <li>1+ years of knowledge of a variety of machine learning techniques (clustering, decision tree learning, artificial neural networks, etc.) and their real-world advantages/drawbacks.</li> <li>Intermediate knowledge of deep learning architectures (RNN, CNN, LSTM, etc.) and frameworks (Tensor flow, Keras, etc.)</li> <li>3+ years of knowledge of in one or more of the following programming languages: Python, Java, C++</li> <li>3+ years of knowledge and experience in Computer Science and in database technologies including SQL, Oracle, SQLServer, SAP HANA and NoSQL databases</li> <li>3+ years of experience in statistical languages and tools in particular R</li> <li>3+ years of experience in problem solving skills with an emphasis on product development</li> <li>AWS (Sagemaker, Athena, Glue)</li> <li>Machine Learning Experience </li> </ul>About our Company DataSoft Technologies is a highly recognized provider of professional IT Consulting services in the US. Founded in 1994, DataSoft Technologies, Inc. provides staff augmentation services for Information Technology and Automotive Services. Our team member benefits include: <ul> <li>Paid Holidays/Paid Time Off (PTO)</li> <li>Medical/Dental Insurance</li> <li>Vision Insurance</li> <li>Short Term/Long Term Disability</li> <li>Life Insurance</li> <li>401 (K) </li> </ul>

Construction Engineering Manager Onsite About the Job <ul> <li>Location: Greenville, SC</li> <li>Pay rate: Hourly</li> <li>Job ID:</li> </ul> This is a full-time W2 position, no subcontracting or C2C. Overview: DataSoft Technologies, Inc. is seeking a Construction Engineering Manager to join our client in Greenville, SC. Ensure that technical aspects of field construction are satisfied and that the facility is built in according to contract requirements. This position is responsible for the construction engineering staff in all phases of the project as well as the Project Document and Data Management (PDDM) department. This position is responsible for the administration of the field engineering department on a large to mega-project size. Responsibilities:<ul> <li>Establish and execute the construction engineering program, which includes the exchange of engineering information among the client, design engineer, and project</li> <li>Supervise the project construction engineers and coordinates their activities with the</li> <li>activities of the construction engineering department and other project departments</li> <li>Establish and maintain effective communication between the company and design engineering to ensure the timely flow of design documents and information</li> <li>Work with the Site Quality Manager to ensure that the Quality objectives are being met for the project</li> <li>Other duties as assigned</li> </ul> Qualifications:<ul> <li>Accredited four (4) year degree or global equivalent in applicable field of study and eighteen (18) years of work-related experience or a combination of education and directly related experience equal to twenty-two (22) years if non-degreed; some locations may have additional or different qualifications in order to comply with local requirements</li> <li>Ability to communicate effectively with audiences that include but are not limited to management, coworkers, clients, vendors, contractors, and other stakeholders</li> <li>Job related technical knowledge necessary to complete the job</li> <li>Ability to learn and apply knowledge of applicable local, state/province, and federal/national statutes and guidelines</li> <li>Ability to attend to detail and work in a time-conscious and time-effective manner</li> </ul> Preferred Qualifications<ul> <li>Construction Management degree or global equivalent</li> <li>Typically has eighteen (18) years of field project experience</li> <li>Thorough working knowledge of Health, Safety, and Environmental (HSE) policies and procedures</li> <li>Advanced computer and software skills to include the use of word processing and email as well as the advanced use of spreadsheets and electronic presentations</li> <li>Excellent oral and written communication skills</li> </ul> About our Company DataSoft Technologies is a highly recognized provider of professional IT Consulting services in the US. Founded in 1994, DataSoft Technologies, Inc. provides staff augmentation services for Information Technology and Automotive Services. Our team member benefits include:<ul> <li>Paid Holidays/Paid Time Off (PTO)</li> <li>Medical/Dental Insurance Group</li> <li>Accident/Critical Illness Insurance</li> <li>Life Insurance</li> <li>401 (K)</li> </ul>

Business Analyst- Senior Hybrid About the Job<ul> <li>Duration: 12 Months Contract (possibility of extension) </li> <li>Location: Hybrid- Raleigh, NC</li> <li>Pay rate: Hourly, depending on experience</li> <li>Job ID: 742981 </li></ul>Qualifications:<ul> <li>Analyze and assess the system and the FARSsystem, including their subsystems. Document system functions, inputs, outputs, and reporting requirements. </li> <li>Collaborate with business subject matter experts(SMEs) and developers to gather and document Phase I business requirements, with an emphasis on cost allocation and associated financial modules. </li> <li>Conduct fit-gap analysis between FARS and FS system features, to map and identify gaps. Create detailed functional specifications and requirements documents. </li> <li>Develop solution design documents to support development and implementation efforts. Assist in the creation of test suites and test cases for testing and validation of solution modules. </li> <li>Prepare and present status reports, risks, and concerns to stakeholders. </li> <li>Provide deliverables to support the "build vs. buy" decision and contribute to Phase II of the project implementation. </li></ul>About our Company DataSoft Technologies is a highly recognized provider of professional IT Consulting services in the US. Founded in 1994, DataSoft Technologies, Inc. provides staff augmentation services for Information Technology and Automotive Services. Our team member benefits include:<ul> <li>Paid Holidays/Paid Time Off (PTO)</li> <li>Medical/Dental Insurance</li> <li>Vision Insurance</li> <li>Short Term/Long Term Disability</li> <li>Life Insurance</li> <li>401 (K) </li> </ul>

Hybrid

About The Job

Duration: 6+ months contract (possibility of extension)
Location: Hybrid, Hartford, CT
Pay rate: Hourly, depending on experience
JobID: 62023

This is a Full Time W2 position. Unable to provide sponsorship.

Overview

DataSoft Technologies is seeking for Business Analyst Sr for our clients in Hybrid, Hartford, CT

Qualifications

Experience with data management of large datasets
Experience using Qualtrics to survey individuals and/or organizations
Experience using GIS (ArcGIS Pro, ArcGIS Online, ArcMap)
Performing data analysis and summarizing relevant data into tables, charts, and written reports
Ability to remote work effectively or be able to work onsite at DPH if needed
Collecting and collating data, including performing interviews
Performing related duties as required.

About Our Company

DataSoft Technologies is a highly recognized provider of professional IT Consulting services in the US. Founded in 1994, DataSoft Technologies, Inc. provides staff augmentation services for Information Technology and Automotive Services. Our team member benefits include:

Paid Holidays/Paid Time Off (PTO)
Medical/Dental Insurance
Vision Insurance
Short Term/Long Term Disability
Life Insurance
401 (K)

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Datasoft Technologies Interview Questions

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Datasoft Technologies Interview Questions

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