Exercise

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.

Instructions

100 XP

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