That would work, but I would still want it to show the exact number. Here is an example that may help.
Average Duration to Perform Activity
-Engineering: 10 Days
-Procurement: 5 Days
-Construction: 3 Days
I would want a block chart with three blocks, Construction having the largest and the data inside the box showing "Construction (3)".
Does that help?
A rather strange request, it looks counterintuitive... Something like this can be done with a pie chart:
One expression is 1/avg()
Second expression is avg(), with "values on data points" checked.
There is no such options for a block chart. Best I can think of - use "text as pop-up" for the second expression.