The following table shows the money earned by each of the 25 scouts in the Khari Kamai project complete the activity to find mean amount earned in that

project

Money earned (xi) No. Of scouts (fi) xi fi

5

5

25

10

90

15

5

75

20

6

N =

∑xifi =

Mean of money earned =

∑Xi fi

= 25 = rupees​

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.