Select the correct answer.
which data set has the greatest spread?

set a – {84, 91, 87, 77, 94, 89, 74}
set b – {89, 73, 84, 91, 87, 77, 94}
set c – {73, 84, 89, 88, 77, 91, 87, 90}
set d – {84, 89, 88, 82, 91, 87, 99}

Ithink it's the first one ( let me know if it right)

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.