In correlation analysis, the two measured variables are [ ] because neither is deliberately [ ].
A
In correlation analysis, the two measured variables are co-variables because neither is deliberately manipulated.
B
In correlation analysis, the two measured variables are co-variables because neither is deliberately controlled.
C
In correlation analysis, the two measured variables are independent variables because neither is deliberately manipulated.
D
In correlation analysis, the two measured variables are dependent variables because neither is deliberately measured.