Question Overview: This is a classic question that lets you assess how well candidates communicate. It also gives you insight into their self-awareness.
Sample Answer: I'm a good communicator. I can explain complex topics in a way that people can understand. I'm also very organized and detail-oriented. I'm good at spotting patterns and trends.
Question Overview: This is a question that is often asked at the end of an interview. It gives you a chance to see how well candidates think on their feet and how they handle criticism.
Sample Answer: I'm not as good at communicating with people as I'd like to be. I'm more comfortable with numbers and analysis. I know that's an important part of this job, so I'm working on it.
Question Overview: This question is a classic and is asked of every candidate. It is a way to see if candidates are realistic about their career goals and if they have a plan to get there.
Sample Answer: I see myself as a data analyst in a growing company. I'd like to be able to work on more complex projects and have more opportunities for advancement.
Question Overview: This question is a classic. It lets you see how well candidates sell themselves and how well they know the job.
Sample Answer: I have a lot of experience in data analysis and I'm very familiar with the software you use. I've worked on projects similar to this one, and I know how to work with people. I'm also very good at finding patterns in data and communicating my results.
Question Overview: This is a classic interview question that gives you insight into how candidates present themselves. You want to hire someone who can sell themselves and who can be a good representative of your company.
Sample Answer: I'm a data analyst with a background in mathematics and computer science. I'm a quick learner and have a knack for spotting patterns. I'm also very organized and detail-oriented.
Question Overview: This question tests how well candidates understand basic data structures. It also gives you insight into how they think.
Sample Answer: An array is a collection of data elements that have the same data type and are stored contiguously in memory.
Question Overview: This question is similar to the previous one, but it is more specific. It also tests your ability to think on your feet.
Sample Answer: I would look at the data on how many people use the site search and what they are searching for. I'd also look at the data on how many people use BloomReach and how much they are paying for it. I'd also look at the data on how many people use other site search services and how much they are paying for them.
Question Overview: This question is a classic. It's a good way to see if candidates are familiar with the company and if they have done any research on the company.
Sample Answer: I've been impressed with your company's commitment to the environment and sustainability. I think it's important for companies to be socially responsible. I'm also impressed with your commitment to employee training and development. I want to work for a company that values its employees.
Question Overview: This question is a good way to gauge a candidate's technical skills.
Sample Answer: I know how to create tables and how to use them in queries. I also know how to create indexes and how to use them in queries.
Question Overview: This question is a good way to see how candidates think on their feet. It also shows how well they know pandas, which is a popular data analysis tool.
Sample Answer: I would use the join function in pandas. I'd create a new column in the first table that matches the second table on the key field. Then, I'd use the join function to merge the two tables.
Question Overview: This question is a good way to see if candidates have a basic understanding of data analysis. It also shows how well they can communicate their knowledge.
Sample Answer: Bayesian classifiers are a type of statistical algorithm that uses prior knowledge to predict future events. For example, if we know that a person is a 90-year-old man, we can predict that he is more likely to die in the next year than a 25-year-old woman.
Question Overview: This question tests a candidate's knowledge of SQL. It also tests their ability to explain the difference between the two.
Sample Answer: A left join is when you want to include all rows from the left table and only the matching rows from the right table. A join is when you want to include all rows from both tables.
Question Overview: This question is designed to see how candidates handle failure. It also gives you a glimpse of their personality.
Sample Answer: I was very disappointed when I didn't get a promotion. I had been working hard and was sure I'd get it. But, I didn't. So, I took some time to think about what went wrong. I realized that I hadn't been communicating well with my boss. So, I made a point of being more open and honest with him. And, it worked! He promoted me the next year.
Question Overview: This question is a good way to find out how well candidates work with others and how they handle conflict.
Sample Answer: I had a difficult time working with my supervisor at my last job. She was very demanding and critical. I had to work with her on a project, and it was difficult to get her to listen to my ideas. I had to be very assertive and make sure she knew that I was the one in charge of the project.
Question Overview: This question is a way to see how candidates think about business. It also shows how well they understand the business side of data analysis.
Sample Answer: I'd start by figuring out how much it costs to make a customer contact. I'd also look at the lifetime value of a customer and the cost of acquiring a new one. I'd look at the profit margin and the price of similar products. Then, I'd look at the number of customers in each segment and what they're willing to pay.
Question Overview: This question is a good way to see if candidates have the hard skills you need. It also gives you insight into their experience and how they approach problems.
Sample Answer: I've used the chi-squared test, the t-test and the ANOVA test. I've also used the Pearson correlation coefficient and the linear regression.
Question Overview: This question is a good way to see if candidates can think on their feet and come up with a reasonable solution. It also shows how well they understand the business side of data analysis.
Sample Answer: I would use a formula that takes into account the number of units sold, the price of each unit and the cost of materials. I would also consider the cost of labor and overhead.
Question Overview: This question is a test of the candidate's ability to think on their feet. It also shows how they handle stress and pressure.
Sample Answer: I would look at the data we have and see if there is anything that could be used as a proxy. If not, I would contact other departments or outside sources to see if they have any data that could help. If all else fails, I would ask my coworkers for help.
Question Overview: This question tests a candidate's ability to use SQL. It also tests their ability to think on their feet and come up with a solution.
Sample Answer: I'd use the DISTINCT keyword to eliminate duplicate data. I'd also use the GROUP BY keyword to group the data by city, state and zip code. Then, I'd use the DENSE_RANK() function to find the rank of each record. Finally, I'd use the ROW_NUMBER() function to find the row number of each record in its group.