Question

In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 23% of your total grade, each major test is worth 21.5%, and the final exam is worth 34%. Compute the weighted average for the following scores: 67 on the lab, 69 on the first major test, 85 on the second major test, and 63 on the final exam.

Answer 1

The weighted average is of 69.94.

Explanation:

Weighted average:

The weighed average is found multiplying each grade by its respective weight.

The grades, and weights are:

67 on the lab, with a weight of 23% = 0.23

69 on the first major test, with a weight is 21.5% = 0.215

85 on the second major test, with a weight is 21.5% = 0.215.

63 on the final exam, with a weight of 34% = 0.34.

Weighted average:

`A = 0.23*67 + 0.215*69 + 0.215*85 + 0.34*63 = 69.94`

The weighted average is of 69.94.