10 Quantitative Research Interview Questions and Answers for UX Researchers

flat art illustration of a UX Researcher
If you're preparing for ux researcher interviews, see also our comprehensive interview questions and answers for the following ux researcher specializations:

1. What made you choose a career in UX research, and how did your background prepare you for it?

As a lifelong avid user of technology, I found myself often critiquing and offering suggestions for product design and user experiences. I became fascinated with the idea of creating flawless user experiences that could enhance the lives of users through better usability and intuitive design. This led me to explore the field of UX research, as it offers the opportunity to not only identify user needs but also create products that meet those needs.

  1. To prepare for a career in UX research, I pursued a degree in Psychology, which equipped me with the knowledge of human behavior and cognitive processes that informs much of the work in the field. This background has helped me to better understand the motivations and behavior of users, which drives my approach to research and design.
  2. Additionally, during my time working in customer service, I became highly skilled in communication and empathetic listening, which are essential skills when conducting user research. I have found that these skills are an essential element when working with users to gather their feedback and help them feel heard and understood.
  3. Lastly, my experience as an intern in a UX research team allowed me to gain practical experience conducting user research and gaining technical skills in various research tools. This provided me with valuable knowledge and skills in survey design, usability testing, and data analysis, which have proved highly useful in my subsequent career in UX research.

2. How do you define and measure the success of a quantitative user research study?

When defining and measuring the success of a quantitative user research study, there are a few key metrics that I typically look at. First, I look at the completion rate of the study. For example, if we send out a survey to 500 users and 400 of them complete it, that’s an 80% completion rate. This is a good indication that the survey was engaging and relevant to our target audience.

Secondly, I look at the responses themselves to see if they provide valuable insights. For example, if we are trying to understand why users are abandoning a specific feature on our website, we might ask them to rank the reasons why they are not using it. If a clear majority of respondents rank a specific reason as the top reason for not using the feature, that tells us that we need to focus our efforts on improving that specific issue.

Finally, I measure the impact that the research has on our business goals. For example, if our goal is to increase website conversion rates and we conduct a survey to better understand user behavior, we can track changes in conversion rates pre- and post-survey. If we see a significant increase in conversion rates after implementing changes based on our research findings, that is a concrete result that demonstrates the success of our research.

  1. 80% completion rate of survey
  2. Majority of responses rank a specific reason as top reason for a problem
  3. Increase in website conversion rates after implementing changes based on research findings

3. What are the most important factors to consider when designing a survey or questionnaire for user research?

When designing a survey or questionnaire for user research, there are several important factors to keep in mind:

  1. Purpose: Clearly define the purpose of the survey or questionnaire. This will help in determining the questions that need to be asked to achieve the desired outcome. For example, if the purpose is to gather feedback on a new website design, questions related to usability and user experience would be important.
  2. Clarity: The questions should be clear and easy to understand. Ambiguous questions can lead to inconsistent responses and misinterpretation of the data. A good practice is to pilot test the survey or questionnaire with a small group of participants to get feedback on the clarity of the questions.
  3. Length: Long surveys or questionnaires can lead to survey fatigue and result in incomplete responses. It is recommended to keep the survey or questionnaire short and focused on the most important questions. A lengthy questionnaire could result in lower completion rates or lower quality input.
  4. Response Options: The response options provided should be comprehensive and match the question being asked. Providing response options that are not relevant or do not provide adequate options may result in incomplete or biased data. Additionally, it is important to avoid leading questions.
  5. Data management: Effective data management is key to ensure reliable results. Ensure the survey or questionnaire has a clear plan for data management, including how data will be analyzed and interpreted. It is also important to ensure the confidentiality and privacy of the respondents are maintained.
  6. Visual design: Visual design can play a role in survey responses. Applying good design practices, such as using appropriate colors, fonts, and white space, can improve response rates.

In a recent survey conducted by our UX research team, we found that surveys with clear and concise questions and a manageable length had a completion rate of 85%. Furthermore, surveys that were well-designed visually had a 20% higher completion rate than those that weren't. These results demonstrate the importance of carefully considering the factors mentioned when designing a survey or questionnaire for user research.

4. How do you ensure that your research results are statistically significant and not the result of chance?

As a UX researcher, it is essential to ensure that the research results are statistically significant and not the result of chance. The following steps outline how I ensure statistical significance:

  1. Define a clear research question and hypothesis
  2. Before conducting any research, I make sure that the research question and hypothesis are clear and well-defined. This helps in determining the appropriate statistical test to be used and ultimately ensures the validity of the results.

  3. Select an appropriate sample size
  4. I use power analysis to determine the required sample size to achieve a statistically significant result. This ensures that the sample size is not too small, which may lead to a false positive result, or too large, which may lead to time and resource wastage.

  5. Ensure randomness and representativeness of the sample
  6. To ensure that the sample is representative of the target population, I use random sampling methods such as simple random sampling or stratified random sampling. This helps to minimize systematic errors and ensure the validity of the results.

  7. Choose a suitable statistical test
  8. Selecting the right statistical test is crucial in ensuring the validity of the results. I use various statistical tests based on the research question and hypothesis, such as t-tests, ANOVAs or regression analysis.

  9. Conduct the statistical test
  10. Once the data is collected, I conduct the appropriate statistical test using statistical software, such as SPSS, R or Excel. This helps to analyze the data and determine the significance of the results.

  11. Interpret the results
  12. I interpret the statistical results by examining the p-value, confidence interval, and effect size. If the p-value is less than 0.05 and the confidence interval does not include zero, the results are statistically significant. In addition, the effect size helps to determine the practical significance of the results.

  13. Communicate the results clearly
  14. It is crucial to communicate the research results to stakeholders clearly and accurately. I use visual aids such as graphs, charts or tables to present the statistical results in a meaningful way.

In a recent study, I used these steps to determine the statistical significance of the impact of a website redesign on user engagement metrics. The results showed a significant increase in user engagement, with a p-value of 0.02 and a medium effect size of 0.5. Therefore, I recommended the website redesign to be implemented, resulting in improved user engagement and satisfaction.

5. What is your experience with A/B testing, and how do you determine the sample size required for a test?

Throughout my career as a UX researcher, I have gained extensive experience in conducting A/B tests to gain data-driven insights into user behavior and preferences. Most recently, I led an A/B test for a mobile app that sought to determine which layout design would enhance user engagement and lead to more in-app purchases.

  1. To determine the sample size required for the test, I used a statistical calculator to calculate the minimum reliable sample size based on the population size and margin of error.
  2. From there, I gathered a pool of users who fit our target demographic and randomly assigned them to either Group A or Group B, depending on which layout they were presented with.
  3. We tracked user behavior over a two-week period, collecting metrics such as click-through rates, time spent on the app, and in-app purchases made.
  4. After analyzing the data, we found that users interacting with the layout design in Group B were more likely to make in-app purchases and spent more time on the app overall.
  5. Based on these results, we recommended implementing the Group B layout design on a larger scale.

Overall, my experience with A/B testing has given me the ability to design experiments that produce statistically significant results, and confidently recommend actionable changes to improve user experience and overall product success.

6. Can you explain a time where you used statistical analysis to uncover user behavior or relationships between variables and influence product decisions?

During my tenure as a UX Researcher at XYZ Inc., I was responsible for analyzing user behavior in a new feature rollout. We wanted to understand what aspects of the feature users engaged with the most and how it impacted their overall experience.

  1. First, we conducted a survey to collect data on user preferences and habits regarding the feature.
  2. Next, we used the collected data to create a hypothesis that focused on the relationship between certain aspects of the feature and user engagement.
  3. Using a mix of quantitative and qualitative methods, we gathered information on how users interacted with the feature, the amount of time they spent on it, and the level of satisfaction or frustration that they expressed.
  4. We then conducted a statistical analysis of the data, and discovered that there was a strong correlation between certain design elements of the feature and user engagement. Specifically, users tended to spend more time on the feature when it included elements of gamification.
  5. Based on these findings, we made several changes to the feature, including adding more gamification aspects and streamlining the user interface. After these modifications, we saw a significant increase in user engagement and satisfaction metrics. For example, user engagement increased by 40%, while user satisfaction increased by 25%.
  6. This experience taught me the importance of integrating statistical analysis into UX research to gain valuable insights into user behavior and make data-driven decisions in product development.

7. How would you go about analyzing and interpreting data from an online user feedback community?

When analyzing and interpreting data from an online user feedback community, I would start by identifying the key themes and topics that emerge from the feedback. I would sort the feedback into categories and use a tool such as Excel or Google Sheets to track the frequency and sentiment of each topic.

For example, let's say we were analyzing feedback from a mobile app for a fitness company. I would categorize the feedback into topics such as user interface, functionality, and workout plans. Then, using a sentiment analysis tool, such as IBM Watson, I could determine the overall sentiment of each category as positive, negative, or neutral.

  • User interface - 60% positive, 20% negative, 20% neutral
  • Functionality - 70% positive, 10% negative, 20% neutral
  • Workout plans - 40% positive, 30% negative, 30% neutral

Based on this analysis, we can see that users generally have positive feedback about the user interface and functionality of the app, but have some negative feedback about the workout plans. I would then dig deeper into the negative feedback to identify specific pain points and areas for improvement.

To further analyze the data, I would create visualizations, such as bar charts or pie charts, to help stakeholders easily understand the feedback trends. This can help guide decision making and prioritize areas for improvement.

  1. Key themes and topics identified
  2. Feedback sorted into categories and sentiment analyzed
  3. Specific pain points identified and areas for improvement prioritized
  4. Visualizations created to communicate feedback trends to stakeholders

8. What tools do you use to manage and analyze quantitative user research data?

As a UX researcher, I understand the importance of managing and analyzing quantitative user research data effectively. In my previous role as a UX Researcher at XYZ Company, I used a variety of tools to manage and analyze quantitative user research data, including:

  1. SurveyMonkey: I used this tool to create and distribute surveys to collect quantitative data. In one project, I used SurveyMonkey to survey 250 users and found that 85% of them preferred a mobile app over a website for accessing our product.
  2. Google Analytics: I used this tool to track user behavior on our website and mobile app. I analyzed this data to identify drop-off points in our onboarding process and made design changes that resulted in a 20% increase in sign-ups.
  3. Excel: I used this tool to clean and organize large datasets. In one project, I analyzed user behavior data from our mobile app and found that users who completed our onboarding process were 30% more likely to make a purchase within their first week of using the app.
  4. R: I used this tool for statistical analysis and to build predictive models. In one project, I used R to analyze user survey data and identified three key factors that were highly correlated with customer retention.

Overall, the tools I use depend on the project goals and the type of quantitative data I am collecting. I am comfortable working with a variety of tools and am always open to learning new ones to improve my research process.

9. What are some common mistakes you’ve seen made in quantitative user research, and how do you avoid them?

One common mistake in quantitative user research is relying solely on self-reported data. While surveys and questionnaires can be a useful tool, they are often subject to response bias and may not accurately reflect user behavior. To avoid this mistake, we use a combination of self-reported data and behavioral data.

  1. We use analytics tools like Google Analytics to track user behavior on our website or platform.
  2. We conduct A/B tests to compare user behavior and preferences.
  3. We collect data on user activity and engagement through heat maps and click tracking.
  4. We conduct user testing to observe how users interact with our product and identify areas of improvement.

Another common mistake is using a sample size that is too small or not representative of the user population. To avoid this mistake, we use statistical power analysis to determine the appropriate sample size for our research. This ensures that our results are statistically significant and accurately reflect the user population. For example, when we conducted a survey to gather user feedback on our mobile app, we used statistical power analysis to determine that a sample size of 500 users was necessary for our results to be statistically significant.

Finally, it is important to avoid leading questions or questions that are too vague or general. To ensure the accuracy of our data, we use clear, concise, and neutral language in our questionnaires and surveys. For example, when we conducted a survey to gather feedback on a new product feature, we asked specific questions like "How easy was it to use the new feature?" instead of vague questions like "Did you like the new feature?"

10. Can you describe your experience working with stakeholders or product teams to communicate research findings, influence design decisions or determining what research is needed?

Throughout my experience as a UX researcher, I have had the opportunity to work with diverse teams and stakeholders, from product managers to designers and engineers. One particular project that comes to mind is when I was working with a team to redesign a health app for a client.

  1. First, I collaborated with the product manager to understand the project goals, scope, and timeline. We determined that we needed to conduct a series of user interviews, usability tests, and a competitive analysis to inform the redesign.
  2. After collecting and analyzing the data, I presented my findings to the team and stakeholders through a variety of mediums, including detailed reports, presentations, and user journey maps. This helped facilitate a shared understanding of the user pain points, needs, and behaviors.
  3. As a team, we then reviewed the design recommendations from my research, and after some discussion and iteration, decided on the final designs for the app.
  4. I continued to work closely with the design team throughout the rest of the project, providing ongoing feedback and testing to ensure that the new design would meet the needs of our users.

As a result of my contributions to the project, we saw a 30% increase in user engagement with the app, and a 25% increase in user satisfaction with the overall experience. This project highlighted the importance of effective communication and collaboration with stakeholders and product teams, and the power of data-driven design decisions.


As a UX researcher, preparing for an interview can be a daunting task. However, knowing the right questions to ask yourself beforehand can improve your chances of securing the job. By understanding the value of quantitative research, you will be able to answer questions that will demonstrate your expertise in the field.

As you take the next steps in your job search, remember to write a great cover letter that will make employers take notice. Our guide on writing a great cover letter can help you create one that stands out. You should also prepare an impressive CV to showcase your education, experience, and accomplishments. For tips, check out our guide on creating a UX researcher resume.

If you are searching for a new job, be sure to visit our remote UX Research job board. There, you will find a variety of opportunities to match your skills and experience in the field. Check out our remote UX Researcher job board today!

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