My statistics teacher wrote a textbook and included .rdata files for the
problem set data. I downloaded these and opened one of them up. Then I used
the ls() command, and it gave me this:

> ls()
[1] "ex02-12"

However, when i try to use the object, it interprets it as ex02 - 12, and I
get the following error:

> ex02-12
Error: object 'ex02' not found

I don't know why my teacher has named everything this way, but she has. How
do I access the object?

Thanks,

Adam Moore

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