Apple Data Scientist interview questions

SQL: Find rows starting with letter 'H' Python: * Create a DataFrame * Return first names from a column (use str.split function) Tableau: * Context Filters (also other types of filters and uses) * Dealing with Nan and null values. * What to do if Tableau visualization loading is slow? Product: Another person is sitting next to me in a room performing tests and it interferes with my Mac power and causes power fluctuations. How to confirm if that person's tests are causing the power fluctuations? You have access to a report of when the tests are run. General: Data Analysis workflow Dealing with NaN's and null values Worked on Splunk? Worked on Mongo DB?

What was one issue you've overcome in the workplace or when working on a project?