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 19% of your total grade, each major test is worth 21.5%, and the final exam is worth 38%. Compute the weighted average for the following scores: 84 on the lab, 66 on the first major test, 94 on the second major test, and 69 on the final exam.

Answer 1

Weighted average = $\frac{(0.19 * 84) + (0.215 * 66) + (0.215 * 94) + (0.38 * 69)}{0.19 + 0.215 + 0.215 + 0.38}$ = 76.58.

Hence, the weighted average of the given scores is 76.58 points.

Answer 2

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