Question

3.1: measures of center. find the weighted average.
in your history class, your final grade is based on four categories. the categories are tests, labs, assignments, and a final exam. suppose you earned the following grades in each of the categories; 72% on tests, 57% on labs, 66% on assignments, and 61% on the final exam. if tests are worth 27%, labs are worth 6%, assignments are worth 6%, and the final exam is worth 61%, determine your final grade in the course. record the grade below as a percentage accurate to two decimal places.
final grade: i %
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Explanation:

Step1: Multiply test grade by its weight

$72\times0.27 = 19.44$

Step2: Multiply lab grade by its weight

$57\times0.06=3.42$

Step3: Multiply assignment grade by its weight

$66\times0.06 = 3.96$

Step4: Multiply final - exam grade by its weight

$61\times0.61=37.21$

Step5: Sum up the results

$19.44 + 3.42+3.96 + 37.21=64.03$

Answer:

$64.03$