It seems that fusionchart does have this: http://www.fusioncharts.com/charts/box-whisker-charts/
So I would try the fusionchart app to try to get this to work.
[EDIT] Chart.js also has one: http://jsbin.com/yekimavemu/2/edit?html,js,console,output And Highcharts also: http://www.highcharts.com/demo/box-plot/
So you can pick almost any chart module from Mendix to get this to work.
The closest I have found is in Google Charts: Google Charts Candlestick Documentation You could use the appstore Google Charts module as a starting point, but would need to add the Candlestick chart type and code all of the necessary data to be passed to the Candlestick chart.
Thanks guys I'll have a look at the examples. Found Google Charts myself as well, but I want to do as little coding as possible :)