2 66 68 69 69 71 72 81 82 83 85 89 92 93 94 97 98 2) A student earned grades of

Question

2 66 68 69 69 71 72 81 82 83 85 89 92 93 94 97 98 2) A student earned grades of 84, 78, 84, and 72 on her four regular tests. She earned a grade of 78 on the final exam and 86 on her class projects. Her combined homework grade was 87. The mean of the four regular tests counts for 40% of the course grade, the final exam counts for 30%, the project counts for 10%, and homework counts for 20%. What is her weighted mean grade? Round to one decimal place. Regular Test Final Exam Class Project Homework 3) List the values that would appear in a boxplot for the given data. Do not construct a boxplot. 25 35 43 44 47 48 54 55 56 57 59 62 63 65 66 68 69 69 71 72 81 82 83 85 89 92 93 94 97 98 4) Describe any similarities or differences in the two distributions represented by the following boxplots. A

Explanation / Answer

2) Mean of regular test = (84+78+84+72)/4 = 79.5
Final test grade = 78
Class project grade = 86
Homework grade = 87

Weighted Mean grade = 0.4*79.5 + 0.3*78 + 0.1*86 + 0.2*87 = 81.2

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