Can someone please check my answers for me cause I’m not sure if I got them right or not The number of students who are in 9th grade and play two or more sports is a :

Marginal frequency

The number of students who are in the 11th grade is a:

Joint frequency

The percent of the student body that plays one sport is a :

Marginal frequency

The percentage of the student body that are in 12th grade and do not play a sport is a :

Joint frequency