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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 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

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

Arconic Salaries by Position

Arconic has an exciting opportunity to join our team as a Procurement Business Analyst (with focus on Transportation) reporting to the Manager of Central Procurement Services. This individual will be innovative, creative, analytical, process driven, and collaborative.This role will concentrate on development of transportation (logistics) reporting, enrich data models to enhance transparency, develop KPIs and reporting, prepare key presentations, function as project lead on defined initiatives, and most importantly be creative/inquisitive to understand procurement and transportation data to enable solution-based improvement opportunities for the Procurement Team and its stakeholders.We will look to this individual in developing fresh, creative, and effective ideas that drive transparency, process optimization, compliance, and cost savings with the overarching target of strengthening our service level to stakeholders and customers.This role requires an individual with a strong analytical mindset, excellent technical skills in Microsoft excel and BI applications, sound financial acumen, and knowledge of procurement and/or transportation. Excellent communication skills are essential as the role interfaces with a broad stakeholder base including operational teams, supply chain leaders, global process owners, customers, suppliers, and trade compliance.At Arconic, we take pride in our work and our innovative products and technologies that advance sustainable solutions for a better world. We strive to create a safe, inclusive, and collaborative workplace with competitive benefits, development opportunities, and a culture that values and rewards employees on all levels of the organization.

Provide leadership to the Reliability Maintenance & Engineering Departments which provides reliability maintenance and engineering services to safely meet the Lancaster Operations business plan. Oversee the coordination of engineering and maintenance Engineering Manager, Liability, Reliability, Reliability, Maintenance, Maintenance Engineer

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