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अभ्यास

The survival object

Before you start any survival analysis, you need to transform your data into the right form, the survival object. Remember: daysSinceFirstPurch contains the time between first and second order. boughtAgain tells you if there was a second order or not.

The survival package is already loaded to your workspace.

निर्देश

100 XP
  • Create a survival object from dataNextOrder using Surv(). Store the result as survObj.
  • Take a look at the object's structure.