Ruby Seven Studios Interview Questions and Answers

Q1. Types of joins in SQL
Ans. 
Types of joins in SQL include inner join, left join, right join, and full outer join.
• Inner join: Returns rows when there is a match in both tables.

• Left join: Returns all rows from the left table and the matched rows from the right table.

• Right join: Returns all rows from the right table and the matched rows from the left table.

• Full outer join: Returns rows when there is a match in either table.
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Q2. Statistics questions like AB testing
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Kaggle data set and explaining data visualization questions

Q1. Salary expectation
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Q2. Why this company and why should we recruit you?
Ans. 
I am passionate about data analysis and believe in the company's mission. My skills and experience make me a valuable asset to your team.
• I have a strong background in data analysis, with experience in manipulating and analyzing large datasets.

• I am proficient in programming languages such as Python and SQL, which are essential for data analysis.

• I have a track record of delivering actionable insights and recommendations ...read more
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Q1. What is A/B testing, and how is it utilized in various applications?
Ans. 
A/B testing is a method of comparing two versions of a webpage or app to determine which performs better.
• Used in marketing to test different ad copies or designs, e.g., comparing two email subject lines.

• In web development, it can test variations of a landing page to see which leads to more conversions.

• E-commerce platforms often use A/B testing to optimize product page layouts for higher sales.

• Mobile apps may use A/B te...read more
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Q2. What is the definition of sanity testing?
Ans. 
Sanity testing is a quick check to verify that a specific function or bug fix works as intended after changes in the software.
• Sanity testing is performed after receiving a software build to ensure that the critical functionalities work.

• It is a subset of regression testing, focusing on specific areas rather than the entire application.

• Example: After a bug fix for a login issue, sanity testing would involve checking if t...read more
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General Aptitude test with general array coding test

Q1. A general coding interview, like print a word in reverse but the word being in an array, push pop slice , array related questions, OOPS concepts, C++ advantages
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Q2. If you know any physical game, eg chess, can you structure that game into a class format, ie class A being player, class B tiles, Class C - being the elements on the chess table
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