Underdetermined, not undetermined.

You cannot uniquely determine this. Let:

A = % submitted SAT only
B =% submitted ACT only
C = % submitted both
D = % submitted neither

So A+B+C+D=100. Also, A+C=47 and B+C=30. You have three equations but four unknowns. Undetermined.

You can however determine the smallest and largest possible D. The largest D is 53 which is achieved when A=17, B=0, C=30. The smallest D is 23 which is achieved when A=47, B=30, C=0. So the % that went TO is between 23% and 53%.

Anonymous wrote:

Anonymous wrote:Furthermore, as far as I can tell, the 23-24 CDS is the most recent one Duke has published. This data is for fall 2023 freshmen, who graduated high school in 2023 and are enrolled in Duke's class of 2027.

I have not seen 24-25.

24 / 25 is on their website: https://provost.duke.edu/sites/default/files/CDS-2024-25-Final.xlsx

Interesting that the 25th percentile for math dropped 20 pts from the year prior, from 780 to 760.

Anonymous wrote:

Anonymous wrote:Furthermore, as far as I can tell, the 23-24 CDS is the most recent one Duke has published. This data is for fall 2023 freshmen, who graduated high school in 2023 and are enrolled in Duke's class of 2027.

I have not seen 24-25.

24 / 25 is on their website: https://provost.duke.edu/sites/default/files/CDS-2024-25-Final.xlsx

For fall 2024 enrolled freshmen, 22% nonsubmitters, with 48% submitting SAT and 30% submitting ACT

Anonymous wrote:

Anonymous wrote:So, adding these to 77% means that, at a minimum, 33% of the enrolled freshmen for that year did not submit scores.

77 + 33 = 110, not 100.

lol Your math is off.

23% enrolled non-submitters. That's about one fourth who are hooked, including atheletes, URM, FGLI.

Also means for non-hooked, chances are very low if TO. Not impossible, but extremely difficult.

Anonymous wrote:

Anonymous wrote:So, adding these to 77% means that, at a minimum, 33% of the enrolled freshmen for that year did not submit scores.

77 + 33 = 110, not 100.

Parent clearly isn’t Duke material.

Anonymous wrote:Furthermore, as far as I can tell, the 23-24 CDS is the most recent one Duke has published. This data is for fall 2023 freshmen, who graduated high school in 2023 and are enrolled in Duke's class of 2027.

I have not seen 24-25.

24 / 25 is on their website: https://provost.duke.edu/sites/default/files/CDS-2024-25-Final.xlsx

Anonymous wrote:

Anonymous wrote:So, adding these to 77% means that, at a minimum, 33% of the enrolled freshmen for that year did not submit scores.

That is just crazy. So 33% of Duke's class had under a 1500. Kind of shocking.

It’s more shocking that pp subtracted 77 from 100 and got 33.

Anonymous wrote:So, adding these to 77% means that, at a minimum, 33% of the enrolled freshmen for that year did not submit scores.

Your math is off, at minimum 23% of enrolled students didn't submit scores. Keep in mind for a school like Duke with a big athletic program the TO admits may mainly be athletes or other hooked applicants.

Anonymous wrote:So, adding these to 77% means that, at a minimum, 33% of the enrolled freshmen for that year did not submit scores.

77 + 33 = 110, not 100.

Furthermore, as far as I can tell, the 23-24 CDS is the most recent one Duke has published. This data is for fall 2023 freshmen, who graduated high school in 2023 and are enrolled in Duke's class of 2027.

I have not seen 24-25.

Anonymous wrote:So, adding these to 77% means that, at a minimum, 33% of the enrolled freshmen for that year did not submit scores.

That is just crazy. So 33% of Duke's class had under a 1500. Kind of shocking.

So, adding these to 77% means that, at a minimum, 33% of the enrolled freshmen for that year did not submit scores.

The CDS data is for enrolled students, not admitted.

Also keep in mind that there is a little overlap between the SAT and ACT percentages, in that some enrolled students would have submitted both SAT and ACT. Personally, my guess is that far fewer submit both tests than back in olden times, say 10 yrs ago.

We are trying to determine what % of admitted students applied test optional to Duke last cycle and the CDS lists that 47 percent submitted SAT scores and 30 percent submitted ACT scores. Does that mean 77% of students submitted some score or is there some overlap between the same students submitting both SAT and ACT scores?