Dataminr Interview Questions

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Data Structures & Algorithms
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Dataminr Interview Questions

Practice for the Dataminr interview with these recently asked interview questions.

QuestionTopicDifficulty
SQL
Easy

We’re given two tables, a users table with demographic information and the neighborhood they live in and a neighborhoods table.

Write a query that returns all neighborhoods that have 0 users. 

Example:

Input:

users table

Columns Type
id INTEGER
name VARCHAR
neighborhood_id INTEGER
created_at DATETIME

neighborhoods table

Columns Type
id INTEGER
name VARCHAR
city_id INTEGER

Output:

Columns Type
name VARCHAR
Data Structures & Algorithms
Easy
SQL
Easy
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Dataminr Salaries by Position

$133K
$179K
AI Research Scientist
Median: $170K
Mean (Average): $162K
Data points: 14
$123K
$198K
Software Engineer
Median: $140K
Mean (Average): $152K
Data points: 27
$129K
$178K
Data Scientist
Median: $145K
Mean (Average): $150K
Data points: 8
$145K
$150K
Data Engineer
Median: $148K
Mean (Average): $148K
Data points: 6
$95K
$120K
Data Analyst
Median: $120K
Mean (Average): $113K
Data points: 4

Most data science positions fall under different position titles depending on the actual role.

From the graph we can see that on average the AI Research Scientist role pays the most with a $162,414 base salary while the Data Analyst role on average pays the least with a $112,500 base salary.

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