Question about Cohort Data (Student Count #s), SAT data and obtaining actual N for those students who submitted SATs, ACTs and HS GPA

In Tableau, when using Cohort Data via the Student Count measure can I obtain the actual number of students who submitted their SATs, ACTs and HS GPA from the fields provided. I can get their average SAT, ACT and HS GPA scores, but I also want/need to know how many student in the cohort submitted these scores. When I look at any of the SAT (ACT or HG GPA) measures and change the average default to count or sum the numbers are different from what I have in our IR data base. Thanks.