Finding gaps between questions and answers

Now we'll join together questions with answers so we can measure the time between questions and answers.

Make sure to explore the tables and columns in the console before starting the exercise. Can you tell how are questions identified in the questions table? How can you identify which answer corresponds to which question using the answers table?

Diese Übung ist Teil des Kurses

Joining Data with dplyr

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Anleitung zur Übung

Use an inner join to combine the questions and answers tables using the suffixes "_question" and "_answer", respectively.
Subtract creation_date_question from creation_date_answer within the as.integer() function to create the gap column.

Interaktive Übung

Versuche dich an dieser Übung, indem du diesen Beispielcode vervollständigst.

questions %>%
  # Inner join questions and answers with proper suffixes
  ___ %>%
  # Subtract creation_date_question from creation_date_answer to create gap
  ___(gap = as.integer(___))

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