How to deal with missings in rowMeans? How to keep the output of RowMeans with mutate?

Hi,

I think it will indeed be easier if you provide a sample dataset we can work with. Take a look at the post below on how to build a reprex and share code and data efficiently. A reprex consists of the minimal code and data needed to recreate the issue/question you're having. You can find instructions how to build and share one here:

Good luck