R coding test: Pre-employment screening assessment to hire the best developers and data experts

Summary of the R (Coding): Debugging test

This R coding test assesses candidates’ ability to interpret R code and debug it based on a set of given requirements. For this R debugging test, candidates have 30 minutes to read through the requirements and fix a partially working script.

Covered skills

Debugging Questions

Use the R (Coding): Debugging test to hire

R developers, including data analysts, data scientists, statisticians, economists, and researchers, especially those in senior positions, or any position that requires the ability to read and correct the R code of others.

Type

Programming skills

Time

30 min

Languages

English

Level

Intermediate

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About the R (Coding): Debugging test

R is a popular programming language used for data analysis, statistics, and machine learning. R is widely used in various industries, including finance, healthcare, and marketing. Its ease of use and flexibility have made it a popular choice for data scientists and analysts.

The ability to debug code is an essential skill for successful R developers with advanced coding knowledge. As new features are being developed, bugs may be introduced into the code and disrupt the regular function of your software. It is, therefore, important for a developer to be able to identify bugs in the code based on a set of requirements and fix them. Given the collaborative nature of software development, it is also critical to be able to work with and correct the code of other developers.

This test provides candidates with a small R script that contains one or more bugs. The description clarifies the objective of the code and provides examples to illustrate how it should function. Candidates must then identify the bugs and fix them.

Candidates can run their code to see if certain pre-defined inputs return the expected result. Once candidates submit their code, the test is scored automatically using a wider set of test cases, which include more challenging corner cases. You can then inspect the code of candidates from your dashboard and play it back to see their thought process and how they came to their solution.

The test is made by a subject-matter expert

Gary R

Gary has been working in the data science field for more than three years and is proficient in the fields of machine learning and data analysis. He has a Bachelor’s degree in Economics and a Master’s degree in Computer Science. The combination of those two fields helps Gary to achieve even greater results. He is fond of computer science and loves to work on projects related to Artificial Intelligence which is, in his opinion, the future of our world.

Crafted with expert knowledge

TestGorilla’s tests are created by subject matter experts. We assess potential subject-matter experts based on their knowledge, ability, and reputation. Before being published, each test is peer-reviewed by another expert, then calibrated using hundreds of test takers with relevant experience in the subject. Our feedback mechanisms and unique algorithms allow our subject-matter experts to constantly improve their tests.

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Great platform! It is developer/coding specific and that is exactly what we needed and were looking for! I also love that it has a lot of culture questions!! This is something we like to focus on in our interviews.

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FAQs

What is the difference between an assessment and a test?

An assessment is the total package of tests and custom questions that you put together to evaluate your candidates. Each individual test within an assessment is designed to test something specific, such as a job skill or language. An assessment can consist of up to 5 tests and 20 custom questions. You can have candidates respond to your custom questions in several ways, such as with a personalized video.

Can I add my own questions to an assessment?

Yes! Custom questions are great for testing candidates in your own unique way. We support the following question types: video, multiple-choice, coding, file upload, and essay. Besides adding your own custom questions, you can also create your own tests.

How do video questions work?

A video question is a specific type of custom question you can add to your assessment. Video questions let you create a question and have your candidates use their webcam to record a video response. This is an excellent way to see how a candidate would conduct themselves in a live interview, and is especially useful for sales and hospitality roles. Some good examples of things to ask for video questions would be "Why do you want to work for our company?" or "Try to sell me an item you have on your desk right now." You can learn more about video questions here.

Can you explain how the other custom question types work?

Besides video questions, you can also add the following types of custom questions: multiple-choice, coding, file upload, and essay. Multiple-choice lets your candidates choose from a list of answers that you provide, coding lets you create a coding problem for them to solve, file upload allows your candidates to upload a file that you request (such as a resume or portfolio), and essay allows an open-ended text response to your question. You can learn more about different custom question types here.

Can I customize an assessment with my company logo and color theme?

Yes! You can add your own logo and company color theme to your assessments. This is a great way to leave a positive and lasting brand impression on your candidates.

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Can I combine the R (Coding): Debugging test with other tests?

Yes. You can add up to five tests to each assessment.

Where in my recruitment process should I use the R (Coding): Debugging test?

We recommend using our assessment software as a pre-screening tool at the beginning of your recruitment process. You can add a link to the assessment in your job post or directly invite candidates by email.
TestGorilla replaces traditional CV screening with a much more reliable and efficient process, designed to find the most skilled candidates earlier and faster.

What kind of coding and programming tests does TestGorilla offer?

We offer coding tests for the following languages: Python, JavaScript, PHP, Java, C, C++, C#, and SQL. These tests feature small coding tasks for a candidate to complete. We also offer multiple-choice tests for web and mobile development framework, such as our Angular, React and Django tests.

R coding test: Pre-employment screening assessment to hire the best developers and data experts

Summary of the R (Coding): Debugging test

Covered skills

Use the R (Coding): Debugging test to hire

About the R (Coding): Debugging test

The test is made by a subject-matter expert

Gary R

Crafted with expert knowledge

What our customers are saying

David Felipe C.

David B.

Geert-Jan W.

Jasper M.

Candace B.

Use TestGorilla to hire the best faster, easier and bias-free

Predict job performance

Hire without bias

Offer a positive candidate experience

Watch how you can use the R (Coding): Debugging test

Create high-quality assessments, fast

Create high-quality job assessments, fast

Invite candidates your way

See the best candidates, ranked

View a sample report

FAQs

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