On Mon, Mar 30, 2015 at 1:59 AM, Ian Lester <ianleste...@gmail.com> wrote:
> i have no idea what to do

One of the other responses already told you it was probably an Rstudio
problem, so not using Rstudip seems like a good place to start.

Sarah

>
>> plot(body.fat, BMI,xlab="Body fat",ylab="BMI",main=“Figure 2.1: BMI vs Body 
>> fat (n=252)”)
> Error: unexpected input in "plot(body.fat, BMI,xlab="Body 
> fat",ylab="BMI",main=�"
>> plot(body.fat, BMI,xlab="Body fat",ylab="BMI")
>  serious error. This application, or a library it uses, is using an invalid 
> context  and is thereby contributing to an overall degradation of system 
> stability and reliability. This notice is a courtesy: please fix this 
> problem. It will become a fatal error in an upcoming update.
>>
>> Begin forwarded message:
>>

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