Exam results for 100 students are given below. For the given exam grades, briefly describe the shape and variation of the distribution.

median =54, mean=74, low score=26, high score=99
What is the distribution?
and
Does it have what variation?

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.