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How to Prepare Questions For an A/B Testing Interview

A/B testing, also known as split testing or bucket testing, is when two versions of a web page are shown to different groups of people and the version which is more successful in achieving its goal is shown to all users. For example, if you want to increase click-through rates on your home page, two versions would be tested. All visitors would be shown one of them at random and whichever one they clicked on most would become the new home page for all visitors.

An a/b testing interview is a perfect opportunity to learn the basics of the process. Many candidates have the mistake of jumping right into the statistical significance and sample size questions. Instead, they should practice identifying imprecise statements and walking through them with the interviewer. This will help you identify which candidates are most likely to fit in with your company culture. You should also consider whether your candidate can speak to the philosophical side of the role of testing.

What A/B Testing Interview Questions are for?

A/B testing interview questions will allow you to differentiate yourself from other candidates:

  1. These questions require you to explain how A/B testing works. You need to show the interviewer that you understand the concepts behind it. It’s a great way to make a strong impression on the hiring manager. 
  2. You’ll stand out in a competitive environment. A/B testing interviews are a great way to get an edge over other applicants.

These questions will also require you to understand the different methods of A/B testing. For example, e-commerce companies will ask you to assess their call-to-action features. A/B testers will need to be familiar with the limitations of experimentation. In addition to this, you’ll need to be able to analyze different combinations of elements. This way, they can create a design that is best for their business and the user.

What Should You Know Before Making a Questionnaire

To understand the various concepts of A/B testing, you’ll want to familiarize yourself with the terminology associated with the subject. Understanding the terminology and procedures related to the method can help you make the right decision when it comes to choosing which A/B test variants to run. This way, you can choose the best option for your product. If you’re unfamiliar with these terms, you’ll be able to answer questions related to the subject in the interview.

When asked which version of the test is better, it’s helpful to have a sample of both versions. The difference between the two versions should be significant enough to make a decision. In other words, if one version is better, the other will be worse. A/B tests are the most effective ways to test products and services. However, they can be very tricky to conduct. Consequently, it’s essential to understand the differences between the two versions to make the right decision.

A/b Testing Interview Questions: An Example

Some A/B testing interview questions ask for a specific scenario. These scenarios are based on an actual case study and are used to measure the effectiveness of a given product. For example, a 24 years old e-commerce company that operates in the fashion industry wants to use your services for its website optimization. As they have 200+ employees, all of whom are working remotely, they want to organize video interviews so that different department managers can meet you and assess its value before offering a full-time position. They also seem to be very open body language during an interview is quite important so being able to maintain eye contact would put you ahead of other candidates. 

Here’s an example list of a/b testing interview questions:

  • Have you ever done an a/b test? If yes, how many and what were the results? How long did it take to achieve those results?
  •  Do you know any Javascript programming languages (ideally not Python as their site is written in Django)? How proficient are you at each language? Java and Python would be great.
  • Can you tell me about some tools that are often used for web app optimization like Google Analytics, Optimizely, Apica System, etc.?
  • What are your favorite A/B testing tools?
  • How do you set up a Google Analytics account to track a website or app?
  • Can you tell me about the different analytical reports within Google Analytics and how I can use them? 
  • Describe a situation where you would need to set up a conversion funnel in Google Analytics. Provide examples of these funnels: from the customer’s first visit, from the lander page, etc.
  • Have you ever done an a/b test? If yes, how many and what were the results? How long did it take to achieve those results?