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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

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

Planet home lending Salaries by Position

Planet Home Lending, LLC, is a privately held, full-service, national mortgage lender and servicer company. Planet is FNMA and FHLMC approved and sells through the Retail and Correspondent Channels, offering FHA, VA, Conventional, USDA and many other products. Planet Home Lending continues to reach month over month sales and servicing increases! Come join us! Job SummaryThe Enterprise Risk Analyst supports the development and execution of reporting and analytics of an integrated enterprise risk management (ERM) program that effectively identifies, measures, monitors and controls company risks.Essential Duties and Responsibilities<ul><li>Participates in the development and execution of ERM and GRC analytics and reporting</li><li>Performs data validation to ensure accurate reporting results.</li><li>Assesses and implements quick-impact ERM projects with business teams</li><li>Assists in identifying, measuring, monitoring, and managing company risks</li><li>Generates ad-hoc analytics and other reports as needed to support team initiatives</li><li>Develops, maintains, and continuously improves ERM policies and procedures</li><li>Performs other duties as assigned</li></ul>Position RequirementsEducation<ul><li>Bachelors Degree or equivalent experience required</li></ul>Experience<ul><li>Minimum 3 years of experience in the financial services industry including a minimum 2 years in risk management required</li></ul>Functional/Technical Skills<ul><li>Working knowledge of Microsoft applications (Excel, Word, PowerPoint).</li><li>Working knowledge in data management and GRC (Governance, Risk, and Compliance) tools</li><li>Strong communication skills</li><li>Ability to establish and maintain effective working relationships</li><li>Ability to work independently in a complex environment. Ability to deliver in a fast-paced environment with competing priorities.</li><li>Detail-oriented with ability to perform quality assurance checks on own and others work.</li></ul> BenefitsOur benefits package includes three comprehensive medical, two dental, and vision plan options. We provide employer paid short-term and long-term disability insurance, basic life insurance, 401(k), 11 holidays and three weeks paid time off per year. We also offer supplemental benefits including life insurance, critical illness, and accident plans.Environmental/Physical DemandsWork is typically performed in a standard office environment. The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. While performing the duties of this job, the employee is regularly required to sustain predictable work attendance, communicate with others, frequently required to stand, walk, sit, and use arms, hands and fingers to reach, handle or touch. The employee must occasionally lift and/or move up to 10 pounds. Specific vision abilities required by this job include close vision, and ability to adjust focus.Pursuant to the Americans with Disabilities Act, reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. This job description is not designed to cover or contain a comprehensive listing of all activities, duties or responsibilities that are required of an employee. The Company reserves the right to amend or modify this document at any time and without notice.

Planet home lending Interview Questions

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Planet home lending Interview Questions

Planet home lending Salaries by Position

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