On a physics exam, the instructor gives a bonus question worth 10 points. The class average (mean) without counting the bonus question is 83. If everyone gets the bonus question correct, the class mean would _________.
A) remain the same
B) equal 83 + 10/ N
C) equal 93
D) exceed the median

Question

Quizplus · Accepted Answer

If everyone gets the 10 point bonus, the total number of points earned by the class would increase by 10 points for each student. Since the class average is calculated by dividing the total number of points earned by the number of students, adding 10 points to each student's score would increase the class average by 10 points. Therefore, the class mean would equal 83 + 10 = 93, making choice C the correct answer.

On a Physics Exam, the Instructor Gives a Bonus Question