: 0 of 1 Save Some teachers use a weighted mean to grades Each score assigned a based on importance To a weighted mean multiply each score by weight and add Reports the results For example , a student's chemistry grade is based on four sources 40% reports 10 25 % the exam and 25 What the student's weighted mean given the scores the Exam 76 Exam 90 The your Type integer a
Sorry, it's not possible to calculate the weighted mean of the student's chemistry grade based on the given information. We need the score for the remaining 25% source to proceed with the calculation.
To calculate the weighted mean for the student's chemistry grade, follow these steps:
1. Start by assigning weights to each source of the grade. According to the given information, the weights are as follows: 40% for reports, 25% for the exam, and 25% for another factor that is not specified.
2. Multiply each score by its corresponding weight. In this case, we need the scores for reports and the exam. The scores are 10 for reports and 90 for the exam.
- Reports score * Reports weight = 10 * 0.40 = 4
- Exam score * Exam weight = 90 * 0.25 = 22.5
3. Add up all the weighted scores obtained from step 2.
- 4 (weighted score for reports) + 22.5 (weighted score for the exam) = 26.5
4. Sum up the weights to determine if they add up to 100%.
- 40% (reports weight) + 25% (exam weight) + 25% (unspecified factor weight) = 90%
Based on the given information, the sum of the weights doesn't add up to 100%. It seems that there is another factor with a weight of 25% that is missing.
If you have the missing weight for the unspecified factor, please provide it, and I can calculate the weighted mean accordingly.