Math

QuestionCalculate your final course average using the weights: Tests (44%), Labs (15%), Homework (27%), Final Exam (14%) with grades 45%, 83%, 91%, and 56%. Record the average as a percentage accurate to two decimal places.

Studdy Solution

STEP 1

Assumptions1. The weights for the categories are as follows Tests44%, Labs15%, Homework14%, Final Exam27% . The grades earned in each category are as follows Tests45%, Labs83%, Homework91%, Final Exam56%
3. The final grade is a weighted average of the grades in each category

STEP 2

We need to calculate the weighted average. The formula for a weighted average isWeightedaverage=(grade×weight)weightWeighted\, average = \frac{\sum (grade \times weight)}{\sum weight}However, since the sum of the weights is100%, we can simplify this toWeightedaverage=(grade×weight)Weighted\, average = \sum (grade \times weight)

STEP 3

Now, we can plug in the grades and weights for each category into the formula.
Weightedaverage=(45%×44%)+(83%×15%)+(91%×14%)+(56%×27%)Weighted\, average = (45\% \times44\%) + (83\% \times15\%) + (91\% \times14\%) + (56\% \times27\%)

STEP 4

Convert the percentages to decimal values.
Weightedaverage=(0.45×0.44)+(0.83×0.15)+(0.91×0.14)+(0.56×0.27)Weighted\, average = (0.45 \times0.44) + (0.83 \times0.15) + (0.91 \times0.14) + (0.56 \times0.27)

STEP 5

Perform the multiplication for each category.
Weightedaverage=0.198+0.1245+0.1274+0.1512Weighted\, average =0.198 +0.1245 +0.1274 +0.1512

STEP 6

Add the results to get the weighted average.
Weightedaverage=0.198+0.1245+0.1274+0.1512=0.6011Weighted\, average =0.198 +0.1245 +0.1274 +0.1512 =0.6011

STEP 7

Convert the decimal value back to a percentage.
Weightedaverage=0.6011×100%=60.11%Weighted\, average =0.6011 \times100\% =60.11\%The final course average is60.11%.

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