Quote Originally Posted by Turnup View Post
You can plot the data points in 2D using the scattergram type graphical function (chart) in Excel.

Superimposing a circle of arbitrary size and origin is quite trivial. Calculate x,y co-ords of a circle at suitable intervals. Take circle size as a fill in box and add an x and y offset fill in box as inputs to the calculation. Plot the points on the same chart. in a different colour. Change circle size and offsets to move it about and tweak until you get the best visual fit.
Does he not need some indication of how the axes are scaled to get the relative size of the target picture correct?