In a procedure validation document, the first sentence in Section 12 "Linearity":
The linearity was evaluated by measuring the peak areas due to aspirin in a series of 12 chromatograms.
Do I need the definite article here, or can I write:
Linearity was evaluated by measuring the peak areas due to aspirin in a series of 12 chromatograms.
We are evaluating the linearity of the HPLC procedure. We are trying to explore whether the procedure produces results that are linear. But maybe there's no linearity at all: there may be no linear relationship between the results.
Somehow it feels like without the article it sounds okay. But I'm not sure.