Look at where your statistics place you on the Data Digest: https://www.purdue.edu/datadigest/. That may give you a better idea of how you compare to other applicants in the past few application cycles; and you can change the parameters of the relevant data pool to fit more closely your own.
You might also take a look at Purdue’s Common Data Set, here, https://www.purdue.edu/oirae/resources.html ; Part C7 tells you what admissions factors Purdue considers to be “very important,” “important,” “considered,” and “not considered”; Part C9 of the CDS gives the median 50% for both SAT and ACT scores, as well as the percentage of the entering first-year class falling within certain ranges of SAT and ACT scores; Part C11 gives the percentage of entering first-year students falling within a range of unweighted GPA on a 4.0 scale, and Part C12 gives the average high school GPA of first-year applicants.
If you applied EA, then you should find out something by January 15.