Prepare Interview with Confidence
What do you do for data preparation? Since data preparation is a critical approach to data analytics, the interviewer might be interested in knowing what path you will take up to clean and transform raw data before processing and analysis. As an answer to this data analytics interview question, you should discuss the model you … Read more
Mention what are the key skills required for Data Analyst? A data scientist must have the following skills Database knowledge Database management Data blending Querying Data manipulation Predictive Analytics Basic descriptive statistics Predictive modeling Advanced analytics Big Data Knowledge Big data analytics Unstructured data analysis Machine learning Presentation skill Data visualization Insight presentation Report design … Read more
What are your long-term goals? Knowing what the company wants will help you emphasize your ability to solve their problems. Do not discuss your personal goals outside of work, such as having a family or traveling around the world, in response to this question. This information is not relevant.” Instead, stick to something work-related like … Read more
What was your most difficult data analysis project? With a question like this, the interviewer is gaining insight into how you approach and solve problems. It also provides an idea of the type of work you have already done. Be sure to explain the event, action, and result (EAR), avoid blaming others, and explain why … Read more
What is KNN imputation method? KNN imputation method seeks to impute the values of the missing attributes using those attribute values that are nearest to the missing attribute values. The similarity between two attribute values is determined using the distance function. What is the difference between R-squared and adjusted R-squared? R-squared measures the proportion of … Read more
Design a view in a map such that if a user selects any country, the states under that country has to show profit and sales. According to your question, you must have a country, state, profit and sales fields in your dataset. Double-click on the country field. Drag the state and drop it into Marks … Read more
Have you ever created or worked with statistical models? If so, please describe how you’ve used it to solve a business task. As a data analyst, you don’t specifically need experience with statistical models, unless it’s required for the job you’re applying for. If you haven’t been involved in building, using, or maintaining statistical models, … Read more
What is required to become a data analyst? To become a data analyst, Robust knowledge on reporting packages (Business Objects), programming language (XML, Javascript, or ETL frameworks), databases (SQL, SQLite, etc.) Strong skills with the ability to analyze, organize, collect and disseminate big data with accuracy Technical knowledge in database design, data models, data mining … Read more
What is the difference between joining and blending in Tableau? The Joining term is used when you are combining data from the same source, for example, worksheet in an Excel file or tables in an Oracle database. While blending requires two completely defined data sources in your report. What is the Alternative Hypothesis? To explain … Read more
There are 5 lanes on a race track. One needs to find out the 3 fastest horses among the total of 25. Determine the minimum number of races to be conducted in order to find the fastest three cars. Now, you can start solving the problem by considering the number of cars racing. Since there … Read more