Dear all,
I have the following data set:
Vessel Date of landing Revenue
1 July/05/2004
2
3
.....
I would like to create a variable whose value is the average revenue
of all other vessels having the same date of landing. For instance,
for vessel 1, this variable will be the average revenue of all other
vessels (not including vessel 1) whose date of landing is
July/05/2004.
Thanks so much and Have A Wonderful Day!
Sincerely yours,
Quang
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