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1St Edge Llc Interview Questions

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<p>You are testing hundreds of hypotheses with many <em>t</em>-tests. What considerations should be made?</p>


<p>What is a key disadvantage of the F-test when compared to multiple t-tests?</p>

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?

<p>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.</p>

<p>Write a query to randomly sample a row from this table.</p>

<p><strong>Input:</strong></p>

<p><code>big_table</code> table</p>

<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

<p>Let’s say you work for a social media company that has just done a launch in a new city. Looking at weekly metrics, you see a slow decrease in the average number of comments per user from January to March in this city.</p>

<p>The company has been consistently growing new users in the city from January to March.</p>

<p>What are some reasons why the average number of comments per user would be decreasing and what metrics would you look into?</p>


<p>What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?</p>

What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?

Decreasing Comments

How would you investigate a decline in the average number of comments per user?

1St Edge Llc Salaries by Position

<p>1st Edge is a growing business seeking top performers to join in our mission of developing Artificial Intelligence solutions for our government customers. We offer technically advanced, challenging work in an employee-centered environment driven by the desire to contribute to a meaningful purpose. Our employees work closely with Space and Missile Defense Command (SMDC), Missile Defense Agency (MDA), and Combat Capabilities Development Command (CCDC). We believe in a balanced, quid pro quo relationship between the company and its employees, providing all benefits at no cost, plus generous time off. This balanced culture allows employees to do their best work and contributes to our extraordinary success rate. From an excellent benefits package to job autonomy with challenging work, 1st Edge cultivates an innovative and collaborative environment with meaningful work. 1st Edge is seeking a skilled Data Analyst with geospatial experience to join our team. In this position, you will be instrumental in crafting datasets and software solutions for 1st Edge in support of our customers. Some tasks performed in this role are data acquisition, creation of datasets, compiling data statistics, and creating data solutions to support internal development teams. This position is on-site at 1 st Edge LLC , located in Huntsville, AL. Responsibilities include, but are not limited to the following tasks: Follow standards for analyzing, processing, and cataloguing geospatial data for AI applications Conduct data analysis and create products to support AI model development Improve and maintain existing data processing and analysis workflows and procedures Facilitate the incorporation of data, models, and software into customer lab environments Essential skills : Experience with GIS software (e.g., ArcGIS, QGIS) and geospatial data formats (e.g., shapefiles, GeoTIFF). Proficiency in Python 3.x, including libraries like NumPy, Pandas Strong problem-solving, organizational, and communication skills Ability to work independently with minimal supervision in an office environment A willingness to learn Desired skills: Experience with GDAL Experience with a cataloging system such as STAC Experience working with git and Visual Studio Code General Requirements: Ability to obtain and maintain a security clearance US Citizenship required Education Requirements: Bachelor's degree in Geography, GIS, Environmental Science, Geosciences, or similar</p>

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