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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

Kayrros Salaries by Position

Passionate about finance, climate and AI? Join Kayrros, as a Junior Product Analyst - Internship Founded in 2016, Kayrros is a global climate technology company and a world leader in environmental intelligence. Kayrros use satellite imagery, AI, and geo-analytics to help governments, investors and businesses understand the risks posed by the changing climate and energy landscapes and make more informed decisions. Kayrros has recently been named one of the world’s 100 Most Influential Companies by TIME, included on Fortune's annual Change the World and is a winner of the FT Tech Champions 2022. Kayrros has offices in Paris, Houston, New York, London, Bangalore and Singapore. Kayrros clients are the world’s leading investors, regulators and corporations. For more information visit <a>www.kayrros.com</a> Kayrros is building a team of talented people to positively disrupt the world’s climate governance and reshape the future of finance and the environment. Join us to make a difference! We are currently recruiting for our Paris office, an Intern Junior Product Analyst H/F The team you will be joining: the Finance products teamRole<ul><li>You will work across Kayrros products, exploring new data sources and providers, developing the new product features, and analysing data results in Python.</li><li>You will document your results and research for internal purpose and external communication.</li><li>You will work directly with the Lead Products Engineers, as well as with all the product teams, data scientists and data engineers.</li></ul> ProfileThis is an ideal opportunity if you are looking for a six-month internship starting between September and November 2024, and you want to join a fast-growing start-up.<ul><li>You have an interest in finance and climate-related topics</li><li>You are dynamic, curious, and eager to learn about the energy industry</li><li>You have experience with Python and are able to write reusable, testable and efficient code</li><li>You are fluent in English</li><li>You can deliver the results of your research with compelling visuals</li><li>You can work in a fast-paced environment</li><li>You are a hard worker with critical-thinking skills and interest in topics such as asset management, AI and satellite technology</li><li>Optionally: experience with some components of our current stack: Spark, Docker, Elasticsearch, Pandas, Scikit-learn </li></ul> We encourage all qualified candidates, eager to learn and grow, to apply, even if they do not meet all of the requirements listed above. Why join Kayrros?<ul><li>We are a young, fast-growing tech company and extremely passionate about what we do.</li><li>We are located in the WeWork building on Rue la Fayette, 75009 (free drinks, events and a vibrant atmosphere).</li><li>You will work with an international team and practice your English (or Chinese, German, Greek, Portuguese...) on a day-to-day basis.</li></ul>

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