If I want to conduct analysis using a quartile, what is the correct way to say this?
<p>Do I "use a quartile" or do I "use quartiles"? Is "use" even the correct word?</p>

<p>Do I need to be more wordy and say "use quartile summary statistics?"</p>

<p>Should I say "use quartile analysis" or something like that?</p>

<p>EDIT:
We have a large team of reviewers reviewing a large group of applicants. Each applicant will be ranked by each reviewer using a number scale. When completed we will <strong>use a quartile</strong> to analyze the ranking. </p>