What is the student's overall score if he receives 89 in the Final?

Question

In this Statistics class, Homework, Module Quizzes, Attendance, Exam One, Exam Two, and Final make up 10%, 10%, 10%, 20%, 20%, 30% of the total grade respectively.

Before the final exam, a student received 81 on Homework, 85 on Module Quizzes, 76 on Atendance, 88 on Exam One, 87 on Exam Two

What is the student's overall score if he receives 89 in the Final? Round to two decimal places.

Answer 1

81, 85, 76, 88, 87, 89

10, 10, 10, 20, 20, 30 percent

= .1, .1, .1, .2, .2, .3

final grade is a weighted average, weight each grade by its percentage of the final grade

.1(81) + .1(85) + .1(76) + .2(88) + .2(87) + .3(89)

= 8.1 + 8.5 + 7.6 + 17.6 + 17.4 + 26.7

= 85.9 = the Final Grade

= 85.90 exactly, no need to round off

or = 86, as they usually round off, which a letter grade = B