ARM Interview Questions

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ARM Interview Questions

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

QuestionTopicDifficulty
SQL
Medium

Let’s say we want to improve the matching algorithm for drivers and riders for Uber. The engineering team has added a new column to the drivers table called weighting. It contains a weighted value, which they hope will lead to better matching.

Given this table of drivers, write a query to perform a weighted random selection of a driver based on the driver weight.

Example:

Input:

drivers table

Column Type
id INTEGER
weighting INTEGER

Output:

Column Type
id INTEGER
Behavioral
Medium
Data Structures & Algorithms
Easy
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ARM Salaries by Position

Data Scientist*
$139K
$168K
Data Scientist
Median: $154K
Mean (Average): $154K
Data points: 2
Business Analyst*
$139K
Business Analyst
Median: $139K
Mean (Average): $139K
Data points: 1
$90K
$135K
AI Research Scientist
Median: $125K
Mean (Average): $120K
Data points: 27
$66K
$143K
ML Engineer
Median: $127K
Mean (Average): $114K
Data points: 4
$57K
$196K
Product Manager
Median: $67K
Mean (Average): $111K
Data points: 3
$62K
$157K
Software Engineer
Median: $103K
Mean (Average): $107K
Data points: 44

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

From the graph we can see that on average the Data Scientist role pays the most with a $153,500 base salary while the Software Engineer role on average pays the least with a $106,806 base salary.

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