To calculate the weighted mean for the student, we first need to multiply each score by its respective weight and then add the results.
Weighted mean = (0.40 * 81) + (0.10 * 90) + (0.20 * 80) + (0.30 * 88)
Weighted mean = 32.4 + 9 + 16 + 26.4
Weighted mean = 83.8
Therefore, the student's weighted mean is 83.8.
Some teachers use a weighted mean to calculate grades. Each score is assigned a weight based on its importance. To find a weighted mean, multiply each score by its weight and add the results. For example, a student's final chemistry grade is based on four sources: 40% from lab reports, 10% from quizzes, 20% from the midterm exam, and 30% from the final exam. What is the student's weighted mean given the scores shown in the table? Lab Reports 81 Quizzes 90 Midterm Exam 80 Final Exam 88 Question content area bottom Part 1 The student's weighted score is enter your response here. (Simplify your answer. Type an integer or a decimal.)
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