19. Quiz - Data Wrangling with DataFrames
Quiz
Answer these quiz questions. Use the "sparkify_log_small.json" file in the Spark Sandbox. You'll need to wrangle the data yourself to find the answers. You can use the Jupyter notebook in the next part of the lesson.
Answer code is provided after the Jupyter Notebook.
SOLUTION:
NextSongReflect
QUESTION:
What type of user does the empty string user id most likely refer to?
ANSWER:
Users who are only visiting the About, Home and Login pages are probably unregistered visitors.