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Edit -- This question was originally titled << Long to wide data reshaping in R >> I'm just learning R and trying to find ways to apply it to help out others in my life. As a test case, I'm working on reshaping some data, and I'm having trouble following the examples I've found online. What I'm starting with looks like this: ID Obs 1 Obs 2 Obs 3 1 43 48 37 1 27 29 22 1 36 32 40 2 33 38 36 2 29 32 27 2 32 31 35 2 25 28 24 3 45 47 42 3 38 40 36 And what I want to end up with will look like this: ID Obs 1 mean Obs 1 std dev Obs 2 mean Obs 2 std dev 1 x x x x 2 x x x x 3 x x x x And so forth. What I'm unsure of is whether I need additional information in my long-form data, or what. I imagine that the math part (finding the mean and standard deviations) will be the easy part, but I haven't been able to find a way that seems to work to reshape the data correctly to start in on that process. Thanks very much for any help.
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