Hubpages is a very great platform where you can improve your language and grammatical skills to a great extent. Further, it has various capsules to format your writing content to give it a unique picture. No other platform seems to be so much qualitatively good. Here you can generate great content with best quality and presentation.
Coming to statistics and quotes from others, you can input them as it is in your text capsules with quotations and references to the original author in their own words and letters. They do not come under scanner as they are quotes. This should be the procedure as far as I think.