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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

Shift Digital Salaries by Position

Shift Digital is the leader in digital marketing program optimization. Established in 2008 and headquartered in Birmingham, Michigan, our comprehensive solutions help national brands and their local retailers measure, manage, and improve the performance of their digital marketing and sales initiatives. Our Advanced Analytics team continues to grow and is looking for analytically minded, self-driven individuals that enjoy deep diving into new data. At Shift, you’re part of an Advanced Analytics team where you’ll have many Analysts to learn from, bounce ideas off of, and make nerdy jokes with. That’s not to say we’re all like-minded! We have SME’s in Digital Advertising, Customer Leads, Website Experience, Inventory, Sales, Field Training, and more. Other than your great co-workers, the best part of being a Digital Analyst at Shift is the plethora of data we have available. We’re not limited to just Website Metrics or Customer Leads. We can analyze performance from Digital Advertising to the Dealership Experience, all the way to the Sale! Key Responsibilities & Highlights<ul><li>Collaborate with an energetic team of analysts at one of the Top Places to Work in metro Detroit</li><li>Working directly with a large automotive OEM and Shift Digital account team leadership</li><li>Direct contact and day to day support for Stellantis Analytics team</li><li>In the office at least one to two days per week sitting with the Stellantis account team. Additional in office days to support client visits. be supported when client plans to be in.</li><li>Capture client requests and ensure timely delivery of solutions</li><li>Joins and participates in all meetings to understand Stellantis client challenges/questions and provide recommendations</li><li>Analyze reports and data, identify trends, and develop effective solutions to improve performance</li><li>Respond to client questions and requests promptly and effectively, without direct guidance from the account director or other team members</li><li>Present reports and presentations to clients, engaging in one-on-one conversations to address questions and provide insights</li><li>Proactively identify opportunities for improvement in digital marketing, sales, and conversion performance, and make recommendations accordingly</li><li>Utilize expertise in PowerBI to analyze data and create actionable reports that drive informed decision-making</li><li>Responsible for prioritizing reporting deliverables to Pooja and Emily and QAing work product for accuracy</li><li>Have direct access to all data sets available to the advanced analytics team, and independently create and execute reports using this data</li></ul> Desired Skills and Experience<ul><li>7+ years of experience in an Analytics capacity desired</li><li>Experience with digital advertising metrics and optimization recommendations</li><li>impressions, cost per click, cost per conversion</li><li>Experience with an eye on improving performance is also welcome! Tell us about analysis you’ve done that’s lead to improvements in previous roles</li><li>Ability to analyze complex/large datasets and distill findings into a compelling and concise story.</li><li>Excellent communication and presentation skills are expected</li><li>Self-motivated individual with a curious mindset</li><li>Must have an advanced user understanding of Microsoft PowerBI Excel & PowerPoint.</li><li>Statistical modelling</li><li>SQL query writing</li><li>Experience in Automotive vertical a plus, but not required</li></ul> EOE

Shift Digital is the leader in digital marketing program optimization. Established in 2008 and headquartered in Birmingham, Michigan, our comprehensive solutions help national brands and their local retailers measure manage, and improve the performance of their digital marketing and sales initiatives. Our Advanced Analytics team continues to grow and is looking for analytically minded, self-driven individuals that enjoy deep diving into new data. At Shift, you’re part of an Advanced Analytics team where you’ll have many Analysts to learn from, bounce ideas off of, and make nerdy jokes with. That’s not to say we’re all like-minded! We have SME’s in Digital Advertising, Customer Leads, Website Experience, Inventory, Sales, Field Training, and more. Other than your great co-workers, the best part of being a Digital Analyst at Shift is the plethora of data we have available. We’re not limited to just Website Metrics or Customer Leads. We can analyze performance from Digital Advertising to the Dealership Experience, all the way to the Sale! Key Responsibilities & Highlights<ul><li>Collaborate with an energetic team of analysts at one of the Top Places to Work in metro Detroit</li><li>Analyze data including: Website Performance, Customer Leads, Dealer Sales, Inventory, Digital Advertising, Field Training, Mystery Shop, & more!</li><li>Produce and deliver recurring and ad-hoc reporting, allowing clients and internal teams to make timely business decisions. For example, you might:</li><li>Develop traffic and digital advertising spend pacing models to account for seasonality, incentives, dealer performance and other variables.</li><li>Build and customize an executive summary that highlights performance of digital advertising activities.</li><li>Provide media mix performance data.</li><li>Determine and validate best practices using exploratory data analysis, identifying digital advertising products or campaigns that significantly impact KPIs.</li><li>Identify and communicate best practices and consumer behavior patterns to better the success of the program.</li><li>Dependent on the client and your desired career path, we have both account facing roles and internal roles. Let us know what you’re thinking and we can give you a better idea of where you might fit and how we can help you grow!</li><li>Amazing perks and benefits including but not limited to, high quality medical coverage, 401k with company match, catered lunches and a gym membership. This position is currently remote.</li></ul> Desired Skills and Experience<ul><li>1+ years of experience in an Analytics capacity desired</li><li>Experience with digital advertising metrics and optimization recommendations </li><li>impressions, cost per click, cost per conversion</li><li>Experience with an eye on improving performance is also welcome! Tell us about analysis you’ve done that’s lead to improvements in previous roles</li><li>Ability to analyze complex/large datasets and distill findings into a compelling and concise story.</li><li>Excellent communication and presentation skills are expected</li><li>Self-motivated individual with a curious mindset</li><li>Must have an advanced user understanding of Microsoft Excel & PowerPoint.</li><li>We utilize Power BI daily, some experience is desired. If you’re interested in the role, be sure to check out some tutorials!</li><li>Other desired skills</li><li>Statistical modelling</li><li>SQL query writing</li><li>Experience in Automotive vertical a plus, but not required</li></ul> EOE

Shift Digital Interview Questions

Shift Digital Interview Guides

Shift Digital Interview Questions

Shift Digital Salaries by Position

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