Suppose you want to show the data in a circle graph. Find the measure of the central angle for 7th grade. Round your answer to the nearest degree, if necessary.

Grade Number of Students

4th 45

5th 25

6th 60

7th 50

8th 60

9th 45

The sum of angle in a circle = 360 degree

The total grade number of students = 45+25+60+50+60+45 = 285

The measure of the central angle for each student = (360/285) x 1 = 1.26 degree

In 7th grade, the number of student = 50, so the measure of central angle for grade 7th students = 50 x 1.26 = 63 degree