Mean and SD for two graphs sharing origing

Hi, I just started using Matlab. I would like to create a plot with mean and SD. I tried errorbar but I would like the graph to be a dot instead of a bar. I need two different graph sharing origin. Please, see pic to have an idea of what I need...Here, the origin is not right, but the orientation of the graphs is what I'm aiming to achieve. Moreover, I would like the background of the graph transparent so I can add an image as a background after that, and when adjusting the image in the background, make the whole graph adapt to this dimension (as it does in Excel).. Thanks in advance for your help. Kind regards