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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 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

Genworth Salaries by Position

At Enact Mortgage Insurance (Nasdaq: ACT), we understand that there's no place like home. That's why we bring our deep expertise, insightful offerings, and extra mile service to work every day to help lenders put more people in homes and keep them there. We're looking for a career professional Software Data Engineer in Raleigh, NC to join us in fulfilling our mission, while utilizing our values of excellence, improvement and connection. In this role, you will be responsible for maintaining and enhancing our risk and pricing predictive models and technology platforms that run the models. The technology stack comprises of Java, Informatica, Hadoop, AWS, and Snowflake as part of the solution. You bring a deep expertise in building and maintaining analytical models, and a bespoke ability to work with your business stakeholders. You're a consummate team player, with a continuous improvement mindset, who can design and lead code reviews. You are comfortable in a highly visible role reporting to the Senior Manager, Data & Analytics Engineering in the IT Organization. LOCATION Enact Headquarters, Raleigh, NC - Hybrid Schedule YOUR RESPONSIBILITIES <ul> <li>Build and maintain risk analytics models written in Java (future potential supporting Python based models) </li><li>Build and maintain the necessary frameworks and technology architecture for data pipelines (ETL / ELT) and machine learning pipelines </li><li>Contribute actively to processes needed to achieve operational excellence in all areas, including project management and system reliability. </li><li>Design, Build and launch new data pipelines in production in partnership with the business stakeholders. </li><li>Design and support of new machine learning pipelines as well as dashboards and reports in production. </li></ul>YOUR QUALIFICATIONS <ul> <li>BA/BS in Computer Science, Mathematics, Physics, or other technical fields. </li><li>7+ years of strong experience in back-end software engineering in Java, SQL, Python and Data Analysis </li><li>7+ years of experience in Data Engineering, BI, or Data Warehousing using tools like Informatica, Databricks, Talend, Snowflake. </li><li>5+ years in development of data pipelines/ETL for data ingestion, data preparation, data integration, data aggregation, feature engineering, etc. </li><li>Strong analytical skills with high attention to detail and accuracy. </li><li>Demonstrated ability to successfully collaborate with business stakeholders. </li></ul>PREFERRED QUALIFICATIONS <ul> <li>Experience working in risk modeling and analytics in financial services companies. </li><li>Working knowledge of AWS ETL tools like Glue, Athena, SQS triggers, Step functions and Tableau. </li></ul>COMPANY Enact is a leading publicly traded U.S. private mortgage insurance provider, offering borrower-centric products that enable lenders and other partners across the U.S. to help people responsibly achieve and maintain the dream of homeownership. By empowering customers and their borrowers, Enact seeks to positively impact the lives of those in the communities in which it serves in a sustainable way. Headquartered in Raleigh, North Carolina, we play an active role in supporting a healthier Triangle community. We also support our colleagues' philanthropic efforts in their home communities across the U.S. Enact values all perspectives, characteristics and experiences, and DEI remains at the forefront of what we do. We strive to create an environment where employees can bring their full, authentic selves to work to help each other and their customers. We are proud to be an equal opportunity employer and all hiring decisions are based on merit, qualifications, and business need. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. WHY WORK AT ENACT We bring innovative thinking to the situations at hand We seek out and incorporate diverse views to strengthen our outcomes We work on challenging and rewarding projects We offer competitive benefits: <ul> <li>Hybrid work schedule (shared in-office days Tues/Wed/Thurs) </li><li>Generous Time Off </li><li>40 Hours of Volunteer Time Off </li><li>Tuition Reimbursement and Student Loan Repayment </li><li>Paid Family Leave and Flexible Spending Accounts </li><li>401k with up to 5% employer match </li><li>Fitness and Emotional Wellness Reimbursements </li> </ul>

At Genworth, we empower families to navigate the aging journey with confidence. We are compassionate, experienced allies for those navigating care with guidance, products, and services that meet families where they are. Further, we are the spouses, children, siblings, friends, and neighbors of those that need care-and we bring those experiences with us to work in serving our millions of policyholders each day. We apply that same compassion and empathy as we work with each other and our local communities. Genworth values all perspectives, characteristics, and experiences so that employees can bring their full, authentic selves to work to help each other and our company succeed. We celebrate our diversity and understand that being intentional about inclusion is the only way to create a sense of belonging for all associates. We also invest in the vitality of our local communities through grants from the Genworth Foundation, event sponsorships, and employee volunteerism. Our four values guide our strategy, our decisions, and our interactions: <ul> <li>Make it human. We care about the people that make up our customers, colleagues, and communities. </li><li>Make it about others. We do what's best for our customers and collaborate to drive progress. </li><li>Make it happen. We work with intention toward a common purpose and forge ways forward together. </li><li>Make it better. We create fulfilling purpose-driven careers by learning from the world and each other. </li></ul>POSITION TITLE Associate Data Analyst POSITION LOCATION This position is available to Virginia residents as Richmond or Lynchburg, Virginia in-office applicants or remote applicants residing in states/locations under Eastern or Central Standard Time: Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Virginia, Washington DC, Vermont, West Virginia or Wisconsin YOUR ROLE Do you bring a data-oriented and agile mindset to your work? Do you have a self-starter attitude that is constantly driving improvements without direction? Are you a curious individual who is always exploring information? We are revolutionizing the analytics space in the Long Term Care Insurance industry via innovative technology, intuitive design, and creative thought leadership. We have repeatedly shown the value of the analytics team and continue to invest in our team. Using the latest analytic tools and processes, we're able to analyze our data to provide strategic insight leading to transformational change. To help carry us even further, we are seeking an Associate Controllership Analyst to join our expanding, problem-solving team, supporting our Long Term Care Operations functions. You will analyze quantitative and qualitative information to identify and propose solutions and controls while getting to present findings/insights to the leadership team. You'll apply your understanding of the regulatory environment and the importance of strong processes and controls as it relates to the Customer Service organization. What you will be doing <ul> <li>Oversee and monitor the application of operational risk policies, technology and tools and governance processes </li><li>Work with Customer Service Associates to coordinate remediation efforts. This includes monitoring claims and performing system updates. </li><li>Monitor the data exchange with our external and internal data consortiums and the effectiveness of risk mitigation tools including internal controls </li><li>Source, aggregate, analyze and summarize operational risk data </li><li>Prepare analysis of operational risk exposure events, maintain documentation, and proactively work to resolve </li><li>Perform back-testing for significant operational losses and support remediation </li><li>Maintain up to date Standard Operating Procedures on control processes and appropriate documentation needed for internal and external audits </li><li>Work with internal and/or external auditors, along with key business partners to help manage the audit related process. Includes coordinating meetings, developing timelines, providing sample data, or walkthroughs. </li><li>Perform data analysis for targeted risk reviews, regulatory reviews and ad hoc requests </li></ul>What you bring <ul> <li>A bachelor's degree in an analytical field of study such as Mathematics, Operations Research, Computer Science or Economics or equivalent work experience </li><li>1-3 years of Finance, Risk, Audit or Operations Experience </li><li>Integrated problem solving ability and a process management background </li><li>Strong knowledge of Microsoft Excel </li><li>Aptitude for coding in SQL or Python with a desire to be proficient within 12 months </li><li>A highly strategic, analytical, and curious mindset that can iteratively define relevant metrics and translate analytical insights to drive strategy, action and recommendations </li><li>The proven ability to analyze problems from a quantitative and qualitative standpoint and think critically to formulate conclusions and recommendations. </li><li>Excellent written and oral communication and the ability to reach consensus in a win-win style </li><li>Ability to multitask with capacity to organize and prioritize workload within a complex environment with competing and subtle resource demands </li></ul>Nice to have <ul> <li>Business Objects/Spotfire/Power BI experience </li><li>Customer Service Operations experience </li><li>Genworth product and process knowledge </li></ul>Employee Benefits & Well-Being Genworth employees make a difference in people's lives every day. We're committed to making a difference in our employees' lives. <ul> <li>Competitive Compensation & Total Rewards Incentives </li><li>Comprehensive Healthcare Coverage </li><li>Multiple 401(k) Savings Plan Options </li><li>Auto Enrollment in Employer-Directed Retirement Account Feature (100% employer-funded!) </li><li>Generous Paid Time Off - Including 12 Paid Holidays, Volunteer Time Off and Paid Family Leave </li><li>Disability, Life, and Long Term Care Insurance </li><li>Tuition Reimbursement, Student Loan Repayment and Training & Certification Support </li><li>Wellness support including gym membership reimbursement and Employee Assistance Program resources (work/life support, financial & legal management) </li><li>Caregiver and Mental Health Support Services </li></ul> ADDITIONAL The base salary pay range for this role starts at a minimum rate of $52,900 up to the maximum of $96,700. In addition to your base salary, you will also be eligible to participate in an incentive plan. The incentive plan is based on performance and the target earning opportunity is 7% of your base compensation. The final determination on base pay for this position will be based on multiple factors at the time of this job posting including but not limited to geographic location, experience, and qualifications to ensure pay equity within the organization.

At Enact Mortgage Insurance (Nasdaq: ACT), we understand that there's no place like home. That's why we bring our deep expertise, insightful offerings, and extra mile service to work every day to help lenders put more people in homes and keep them there. We're looking for a Data Science Intern in Raleigh, NC to join us in fulfilling our mission, while utilizing our values of excellence, improvement and connection. In addition to the multiple weekly events attended by all interns, you'll work alongside industry experts for a 12-week internship beginning May 19, 2025. As part of the Data Science team, you will be developing comprehensive analytics for different functions that highly depend on data insights to create efficiencies. This is a dynamic and challenging opportunity to apply the latest machine learning models and methods in Data Science to solve a variety of business matters. THE PROGRAM Enact's Internship Program provides an excellent opportunity for students to gain hands-on experience in achieving business results while developing technical and professional skills. The internship program is a critical component of Enact's talent pipeline as we look to interns to provide cutting edge ideas and skills that will drive business success. Enact invests time, energy, and resources to create a worthwhile experience for interns. Interns work on meaningful business projects, but beyond that, they will network directly with leaders throughout the company (all the way up to the CEO), attend teambuilding events with their internship cohort, connect with the community through volunteer opportunities (both on-site and off-site), and attend professional development workshops. It's a unique internship experience that helps interns develop a network of peers and mentors who act as a source of constant engagement and guidance during the internship. LOCATION Enact Headquarter Office, Raleigh, NC - Hybrid Schedule YOUR RESPONSIBILITIES <ul> <li>Collaborate with partners in Operations (Underwriting, Claims, Billing), Marketing, Pricing, Risk, Customer Solutions, and other functions to define business questions, prepare data, build predictive and prescriptive models, and communicate its insights and recommended actions. </li><li>Design, create and implement advanced analytics and forecasting models to optimize business processes; provide insights for decision making using Machine Learning and traditional statistical modeling </li><li>Using large datasets, develop and perform exploratory data analysis and build advanced machine learning models using structured and unstructured data. </li><li>Communicate the ML models and methods in a logical and understandable manner for non-analytical business users and model governance teams </li></ul>YOUR QUALIFICATIONS <ul> <li>Master's or PhD student in a quantitative research field such as: Statistics, Econometrics, Computer Science, Demography / Actuarial Science, Mathematics, Data Science, Quantitative Social Sciences, Epidemiology, Engineering, etc. </li><li>Hands-on experience developing solutions using Python (Pandas, Scikit-learn), Spark, database query and management tools (SQL), in a cloud platform </li><li>Hands-on experience with multiple Machine Learning models, time series forecasting, optimization, and other predictive modeling techniques. ML experience and knowledge of ML platforms, libraries, and programming </li><li>Strong communication (oral, written, interpersonal, and presentation) skills </li></ul>COMPANY Enact is a leading publicly traded U.S. private mortgage insurance provider, offering borrower-centric products that enable lenders and other partners across the U.S. to help people responsibly achieve and maintain the dream of homeownership. By empowering customers and their borrowers, Enact seeks to positively impact the lives of those in the communities in which it serves in a sustainable way. Headquartered in Raleigh, North Carolina, we play an active role in supporting a healthier Triangle community. We also support our colleagues' philanthropic efforts in their home communities across the U.S. Enact values all perspectives, characteristics and experiences, and DEI remains at the forefront of what we do. We strive to create an environment where employees can bring their full, authentic selves to work to help each other and their customers. We are proud to be an equal opportunity employer and all hiring decisions are based on merit, qualifications, and business need. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. WHY WORK AT ENACT <ul> <li>We bring innovative thinking to the situations at hand </li><li>We seek out and incorporate diverse views to strengthen our outcomes </li><li>We work on challenging and rewarding projects </li> </ul>

Genworth Interview Questions

Genworth Interview Guides

Genworth Interview Questions

Genworth Salaries by Position

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