Box Plot not graphing as expected

[#1]

Any help is appreciated.

Quick explanation of my data.

Customer
Acme
Bean
Crimson
Deloitte

Segment
Lumber
Roofing
Stone

so_id
1
2
3
4
5

These are the main tables. I want to use a box plot, to plot a selected company against the performance of their given industry Segment. For example, Bean would be in the Lumber industry.

Performance in this case is # of lines per so_id. For each so_id, such as so_id 1, it can appear many times in the data. So I use a count of the so_id, so if 1 appears 13 times, then we call that the # of lines in so_id 1.

Using the box plot wizard, with segment as dimension and aggregator, I use this as the expression count(so_id)/ count(DISTINCT(so_id))

since as said before, I want # of lines per so_id

Then I click median mode, graph, and this comes up.

Any help?