Question: Which is better English (if either)?

> 
> * The results are within the range of values from the literature.
> * The results are within the range of values in the literature.
> 
> 
>

Answer: 
Per mine and Edwin's comments above, Google Books confirms an overwhelming preference for 

> 
> [...the range of values **found** in the literature.](http://www.google.com/search?q=%22the%20range%20of%20values%20found%20in%20the%20literature%22&btnG=Search%20Books&tbm=bks&tbo=1)
> 
> 
> 

As a native speaker, I expected that before checking usage figures, but explaining *why* isn't so easy. Partly it's just a matter of established idiomatic usage, but I do think *"found"* is more consistent with the [research/testing] context, in that it shows the writer has made an effort to locate and quantify the relevant values.
The data was taken "from" the literature, but it remains there, in the literature because you aren't taking anything away from the document when you use the data in the document. Hence, "in the literature" is more correct than "from the literature," syntactically although either would be correct grammatically.