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Soldiers on leave

We have received an urgent request from the general staff. Some soldiers, who were recently on leave, have been ordered to self-report their weight on three different occasions. Since you have already worked with the baseline measurements, your tasks are as follows:

1. Investigate how each soldier’s weight has changed since baseline.
   
2. Compare these changes across the different installations.
   
3. Provide a list of all soldiers who failed to report their weight on more than one occasion.

Important Note: There was initial confusion regarding the weight unit reported on the first occasion. It has now been clarified that all weight measurements are in kilograms (kg).

Here is what you need:

• soldiers data soldiers.csv
• Script to import and clean soldiers: 01_import.R
• soldiers_leave data soldiers_leave.csv