Freshmen Juniors
Seniors
Total
Sophomore
6
Male
4
2
2
Female 3
4
6 3
Total
If a student is selected at random, find the
probability the student is a freshman. Round
to the nearest whole percent.

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.