The Colsa Business Intelligence interview guide, interview questions, salary data, and interview experiences.

Colsa Business Intelligence Interview Guide

<p>Getting ready for an Business Intelligence interview at Colsa? The Colsa Business Intelligence interview span across 10 to 12 different question topics. In preparing for the interview:</p>
<ul>
<li>Know what skills are necessary for Colsa Business Intelligence roles.</li>
<li>Gain insights into the Business Intelligence interview process at Colsa.</li>
<li>Practice real Colsa Business Intelligence interview questions.</li>
</ul>
<p>Interview Query regularly analyzes interview experience data, and we've used that data to produce this guide, with sample interview questions and an overview of the Colsa Business Intelligence interview.</p>


Getting ready for an Business Intelligence interview at Colsa? The Colsa Business Intelligence interview span across 10 to 12 different question topics. In preparing for the interview:

- Know what skills are necessary for Colsa Business Intelligence roles.
- Gain insights into the Business Intelligence interview process at Colsa.
- Practice real Colsa Business Intelligence interview questions.

Interview Query regularly analyzes interview experience data, and we've used that data to produce this guide, with sample interview questions and an overview of the Colsa Business Intelligence interview.
        

Overview

Colsa Business Intelligence Salary

<p>We've gathered this data from parsing thousands of interview experiences sourced from members.</p>

We've gathered this data from parsing thousands of interview experiences sourced from members.

Colsa Business Intelligence Interview Process

<p>We’re given a table of bank transactions with three columns, <code>user_id</code>, a deposit or withdrawal value (determined if the value is positive or negative), and <code>created_at</code> time for each transaction.</p>

<p>Write a query to get the total three-day rolling average for deposits by day.</p>

<p><em>Note: Please use the format <code>&#39;%Y-%m-%d&#39;</code> for the date in the outout</em></p>

<p><strong>Example:</strong></p>

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

<p><code>bank_transactions</code> table</p>

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>user_id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>created_at</code></td>
<td>DATETIME</td>
</tr>

<tr>
<td><code>transaction_value</code></td>
<td>FLOAT</td>
</tr>
</tbody>
</table>
<p><strong>Output:</strong></p>

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>dt</code></td>
<td>VARCHAR</td>
</tr>

<tr>
<td><code>rolling_three_day</code></td>
<td>FLOAT</td>
</tr>
</tbody>
</table>


Rolling Bank Transactions

<p>Write a query to identify customers who placed more than three transactions each in both 2019 and 2020.</p>

<p><strong>Example:</strong></p>

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

<p><code>transactions</code> table</p>

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>user_id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>created_at</code></td>
<td>DATETIME</td>
</tr>

<tr>
<td><code>product_id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>quantity</code></td>
<td>INTEGER</td>
</tr>
</tbody>
</table>
<p><code>users</code> table</p>

<table>
<thead>
<tr>
<th>Column</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>
<p> 
<strong>Output:</strong></p>

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>customer_name</code></td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>


<p>Which of the following queries will return a list of customers and the total amount they have spent on orders?</p>


Which of the following queries will return a list of customers and the total amount they have spent on orders?

Customer Orders

<p>Let’s say you’re working for a social media company trying to grow your user base. You know that people tend to use the same social network as their peers, so you want to target all your growth and marketing efforts on specific age groups so as to take advantage of network effects.</p>

<p>You wish to begin with the age group that is currently generating the most connections (fastest growing).</p>

<p>Write a SQL query to find the average number of accepted friend requests for each age group and order the results in descending order.</p>

<p><em>Note: The average number of accepted friend requests is calculated as the total number of friend requests sent by an age group that was accepted divided by the number of members in said age group.</em></p>

<p><em>We can assume the tables hold valid data in that there are no duplicate friend requests, friend requests are only accepted once, and user A can only accept a friend request from User B after B sends A a friend request.</em></p>

<p><em>The result should be rounded to two decimal places.</em></p>

<h3>Example:</h3>

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

<p><strong><code>friend_requests</code></strong></p>

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td>requester_id</td>
<td>INTEGER</td>
</tr>

<tr>
<td>receiver_id</td>
<td>INTEGER</td>
</tr>

<tr>
<td>sent_at</td>
<td>DATETIME</td>
</tr>
</tbody>
</table>
<p><strong><code>requests_accepted</code></strong></p>

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td>accepter_id</td>
<td>INTEGER</td>
</tr>

<tr>
<td>requester_id</td>
<td>INTEGER</td>
</tr>

<tr>
<td>accepted_at</td>
<td>DATETIME</td>
</tr>
</tbody>
</table>
<p><strong><code>age_groups</code></strong></p>

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td>user_id</td>
<td>INTEGER</td>
</tr>

<tr>
<td>age_group</td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>
<p><strong>Output:</strong></p>

<table>
<thead>
<tr>
<th>Column</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td>age_group</td>
<td>VARCHAR</td>
</tr>

<tr>
<td>average_acceptance</td>
<td>FLOAT</td>
</tr>
</tbody>
</table>


Find the average number of accepted friend requests for each age group that sent the requests.

Avg Friend Requests By Age Group

Colsa Business Intelligence Interview Questions

<p>General Summary: </p><p>Data Analytics with Power BI </p><p>Support our Army customer as a Data Analyst, by recognizing business requirements in the context of BI and creating data models to transform raw data into relevant insights for senior leadership. Identify trends and issues with an emphasis on sound judgment, and initiative. </p><p>Work closely with a high-performing, fast-paced team to develop products for decision-makers. </p><p>Responsibilities </p><p>+ Integrate data from multiple sources to produce requested or required data elements </p><p>+ Develop and maintain complex data models for business data analysis and reporting purposes </p><p>+ Using Power BI, create dashboards and interactive visual reports </p><p>+ Define key performance indicators (KPIs) with specific objectives and track them regularly </p><p>+ Analyze data and display it in reports to aid decision-making </p><p>+ Convert business needs into technical specifications and establish a timetable for job completion </p><p>+ Create, test, and deploy Power BI scripts, as well as execute efficient deep analysis </p><p>+ Use Power BI to run DAX queries and functions </p><p>+ Create charts and data documentation with explanations of algorithms, parameters, models, and relationships </p><p>+ Use SQL queries as applicable to get the best results for data analysis and visualization </p><p>+ Develop briefings for a better understanding of the data, by using filters and visualizations </p><p>+ Analyze current ETL procedures to define and create new systems </p><p>At COLSA, people are our most valuable resource and centered at our core value. We invite you to unite your talents with opportunity and be a part of our Family of Professionals! Learn about our employee-centric culture and benefits here (https://www.colsa.com/culture_benefits/) . </p><p>Required SkillsRequired Experience </p><p>+ Bachelor's degree in computer science, data science, engineering, math, statistics, operations research, business, or related field or equivalent experience </p><p>+ Minimum of 3 years of related experience </p><p>+ Active Secret security clearance </p><p>+ Must be proficient in Microsoft Outlook, Excel, Word, and PowerPoint </p><p>+ Background with BI tools and systems such as Power BI, Tableau, and SAP </p><p>+ Prior experience in data-related tasks </p><p>+ Understanding of the Microsoft BI Stack </p><p>+ Mastery in data analytics </p><p>+ Should be proficient in software development </p><p>+ Be familiar with MS SQL Server BI Stack tools and technologies, such as SSRS and TSQL, Power Query, MDX, PowerBI, and DAX </p><p>+ Analytical thinking for converting data into relevant reports and graphics </p><p>+ Capable of enabling row-level data security </p><p>+ Knowledge of Power BI application security layer models </p><p>+ Ability to run DAX queries on Power BI desktop </p><p>+ Proficient in doing advanced-level computations on the data set </p><p>+ Excellent communication skills are required to communicate needs with client and internal teams successfully </p><p>Preferred Skills </p><p>+ MS in Applied Data Science </p><p>+ Familiarity with APAS, Vantage, and Advana </p><p>+ CompTIA Data+ </p><p>+ Google Data Analytics Professional Certificate or Microsoft Certified: Power BI Data Analyst Associate </p><p>Applicant selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information. COLSA Corporation is an Equal Opportunity Employer, Minorities/Females/Veterans/Disabled. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, or national origin. </p>

Colsa Business Intelligence Interview Guide

Overview

Colsa Business Intelligence Salary

Colsa Business Intelligence Interview Process

Colsa Business Intelligence Interview Questions

Colsa Business Intelligence Jobs