== GDP welfare.png and HDI welfare.png == 

 I believe that the use of these two images in the article Welfare state violates Wikipedia's policy on using original research or unverified claims. The original source for the data did not show any correlation or least squares fit or residuals or any formula describing the relation of that data. The source just gave numbers. When you included a "correlation," you included original research and unverified claims. You indicated this by categorizing those images as "Self-published work" when you uploaded them. There's nothing wrong with that... until you included them as figures in the Welfare state article. 

 If you would, please, re-upload them with only the well-sourced data points. They'd be nice to include in that article if only it wasn't for the deceiving "correlation." 

 I think the linear relationship you graphed over the data points is seriously flawed. The residuals from fitting a linear function to that data are so high as to make the correlation dubious at best. That's putting it really nice. The questionable nature of those images (having not been peer-reviewed) is exactly why articles shouldn't contain original research.