Hi,

I need to calculate the average length of a trait per individual. I am not
used to working with R so I could use some help.
The table goes like this:

ind    trait
1       3.6
1       3.8
1       3.9
1       3.6
2       5.5
2       5.2
3       4.8
3       4.5

and so on...

If I type mean(trait) it will give me the average of all the individuals and
I need a list of averages per individual.
Can you help me please?

Kim

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