Find mean and sd of 0/1 variable belonging to a numerical variable

Hi! I am new to R-studio. Does anyone know the code (if there is one) for finding mean and sd of a variable eg. distance river(m) for a species variable (precence/absence)? Hope my question contains sufficient amounts of information.

Hi @slettengmats,
Welcome to RStudio! To help us answer your question, could you post some sample data in "reproducible example" format? Here's an article that explains how to do this:

Even if your actual data is hard to include, confidential, etc., it would be really helpful if you could post just a few lines of a fake dataset so that we can help figure out the answer to your question.


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