mutate(people, age_in _20 = age+20) ... error says age_in _20 must be size 1 not size 4. Not sure what this means. Thank you
Hi, welcome to the forum.
I think we need a FAQ: How to do a minimal reproducible example ( reprex ) for beginners
A handy way to supply some sample data is the dput() function. In the case of a large dataset something like dput(head(mydata, 100)) should supply the data we need.
This may not be the problem, but 'age_in _20' has a space. It should be 'age_in_20'.
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