I have read the question Are there any guidelines for labeling axes in plots/graphs? and related answers and they cover the case where the unit is from the International System of Units (SI), but what about when the graph shows information about people?
I am interested in medicine or in psychology where a lot of graph are related to number of people, is there any wide adopted guideline?
What is the right word to use?
People
?
Person
?
Individual
?
For example if person
were a unit of measurement I should write 10 person
and not 10 persons
because for SI units we do not use plural forms.
In the same way, in a axis label I should write person
and not number of persons
because we usually write meter
(if not abbreviated) and not number of meters
.
And then, what is the short form for person
? I see sometimes pax
but as a short form for passenger
of an aircraft.