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Understanding Gradebook Aggregations in Moodle: Mean, Sum, and Weighted Mean Explained

This document provides a comprehensive overview of gradebook aggregations in Moodle, specifically focusing on the Mean of Grades, Sum of Grades, and Weighted Mean of Grades. It explains how each method calculates student grades, the significance of various components such as course tasks, projects, and assessments, and illustrates these concepts with examples and calculations. The document serves as a useful resource for educators and administrators looking to effectively utilize Moodle's gradebook functionalities.

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Understanding Gradebook Aggregations in Moodle: Mean, Sum, and Weighted Mean Explained

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  1. Moodle Course Development Gradebook Aggregations Ann Morgan ann@chathamma.com

  2. Gradebook Aggregations • Mean of Grades • Sum of Grades • Weighted Mean of Grades

  3. Mean of Grades 96 + 76 + 70 + 100/4 Calculates the average of grades. The sum of all grades divided by the number of grade items. 85.50 89.25 +89.89 267.64 267.64/3= 88.21

  4. Sum of Grades 24 + 38 + 7 +3 = 72 72/88 = 81.82% The sum of all grade values. Earned/possible 1008/1048 = 96.18%

  5. Weighted Mean of Grades • Items, or categories count toward a certain percentage of the overall grade. • 20% - Course Tasks • 50% - Projects • 30% - Assessments

  6. Weighted MeanofGrades 96 76 70 +100 342 342/4 = 85.5 85.5 * .2 = 17.1 89.25 * .5 = 44.625 Course tasks = 20% Projects = 50% Assessments = 30% 17.1 44.625 + 26.967 88.69 2% 89.89 * .3 = 26.967 * Configured to show 2 decimal places

  7. Which Aggregation? • Mean of Grades 88.21% • Sum of grades 96.17% • Weighted mean 88.69%

  8. www.moodle.org

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