<p>It would be snarky of the SAT to test on this word. It data was certainly once plural, but now, not so much. Consider:</p>
<p>“My experiment seems to show that gravity decreases as you get closer to the planet, so I suspect that my data are flawed.” </p>
<p>No one says that anymore. As a physics teacher, I can tell you that other teachers debate this. My favorite explanation compares data to rice. Each grain of rice is singular, but together they make up an collection that is still singular! Would you say “rice are my favorite food”? </p>
<p>In any case, the SAT does not defeat you by testing on obscure or currently evolving usages. HOPEFULLY, this will not be an issue.</p>