Mars Interview Questions

Mars Interview Guides

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SQL
(3)
Machine Learning
(3)
Behavioral
(2)
Statistics
(1)
Forecasting & Time Series
(1)

Mars Interview Questions

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

QuestionTopicDifficulty
SQL
Medium

Given a employees and departments table, select the top 3 departments with at least ten employees and rank them according to the percentage of their employees making over 100K in salary.

Example:

Input:

employees table

Columns Type
id INTEGER
first_name VARCHAR
last_name VARCHAR
salary INTEGER
department_id INTEGER

departments table

Columns Type
id INTEGER
name VARCHAR

Output:

Column Type
percentage_over_100k FLOAT
department_name VARCHAR
number_of_employees INTEGER
Behavioral
Medium
Statistics
Medium
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Challenge

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Mars Salaries by Position

$81K
$97K
Software Engineer
Median: $88K
Mean (Average): $89K
Data points: 13

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

From the graph we can see that on average the Software Engineer role pays the most with a $88,898 base salary while the Software Engineer role on average pays the least with a $88,898 base salary.

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