I think I may have partly solved my own query in the main forum (another person asked me to come back with a QQ plot in comments and the QQ plot suggests a normal distribution) and to find out if I have understood this (I don't have a great statistics background but I've done some research) I would like to paste the plot which I've put together in Excel straight into the question (1 answer with 11 follow-up comments).
Can data be pasted into a comment or do I have to answer my own question so that I can paste the data in?
Is there an easy way to do this? The reason why I ask is that I have copied spreadsheet data in to questions in the past I haven't got the formatting right and as a result it has been difficult to read the data. I have tried looking through the markdown editing help and have not really understood what I am supposed to do (but I am figuring that you can't just copy and paste in?). With regard to images (which essentially is what the chart/plot will be) can you paste these in directly if there is no link behind them (the advice implies that you need to add a ! in front and then a link?). I apologise for the basic nature of the question but I am just keen to do things appropriately.