Solve the Problem. -A Student Earned Grades of 84, 78, 84, and 72

question 4

Multiple Choice

Solve the problem.
-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 four regular tests count for 40%
Of the final 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.

• A) 80.2
• B) 81.3
• C) 81.2
• D) 82.1

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Definitions:

Price Per Barrel

The cost of a barrel of goods, commonly used in reference to crude oil prices in the commodities market.

Outlier

An observation in a dataset that is distant from other observations such that it appears to deviate markedly from other members of the sample.

Autocorrelation

The correlation of a signal with a delayed copy of itself as a function of delay.

Regression Assumption

The underlying assumptions required for regression analysis, including linearity, independence, homoscedasticity, and normality of residuals.