This article was posted by Ankit Gupta.
If there is one language, every data science professional should know – it is SQL. SQL stands for Structured Query Language. It is a programming language used to access data from relational databases.
We conducted a skilltest to test our community on SQL and it gave 2017 a kicking start. A total of 1666 participants registered for the skilltest.
This test focuses on practical aspects and challenges people encounter while using Excel. In this article, we provide answers to the test questions. If you took the test, check out which areas need improvement. If you did not take the test, here is your opportunity to look at the questions and check your sill level independently.
Two sample questions from the skilltest
Below are the distribution of scores, this will help you evaluate your performance:
You can assess your performance here. More than 700 people participated in the skilltest and the highest score was 41. Here are a few statistics about the distribution.
Mean Score: 22.32
Median Score: 25
Mode Score: 27
This is an interesting distribution. I think we are seeing 3 different profiles of people here:
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