In your biology class, your final grade is based on several things: a lab score,
ID: 3263624 • Letter: I
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 22% of your total grade, each major test is worth 24.5%, and the final exam is worth 29%. Compute the weighted average for the following scores: 73 on the lab, 78 on the first major test, 71 on the second major test, and 76 on the final exam. (Enter your answer to one decimal place.)Explanation / Answer
(a)
things Score Weight Score X Weight
lab 73 0.22 16.06
first major test 78 0.245 19.11
second major test 71 0.245 17.40
final 76 0.29 22.04
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Total 74.61
So, weighted average = 74.6 %
(b) activity rating weight rating X weight
promtness 4 2 4 X 2 = 8
record keeping 8 4 8 X 4 = 32
appearance 9 1 9 X 1 = 9
bedside manner 9 3 9 X 3 = 27
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Total 10 76
So, average rating = 76/10 = 7.6