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What is the weighted mean of the scores 80, 90, and 70 with weights 1, 2, and 1
What is the weighted mean of the scores 80, 90, and 70 with weights 1, 2, and 1 respectively?
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Practice Questions
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Q1
What is the weighted mean of the scores 80, 90, and 70 with weights 1, 2, and 1 respectively?
80
85
90
75
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Weighted mean = (80*1 + 90*2 + 70*1) / (1 + 2 + 1) = 85.
Questions & Step-by-step Solutions
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Q
Q: What is the weighted mean of the scores 80, 90, and 70 with weights 1, 2, and 1 respectively?
Solution:
Weighted mean = (80*1 + 90*2 + 70*1) / (1 + 2 + 1) = 85.
Steps: 5
Show Steps
Step 1: Identify the scores and their corresponding weights. The scores are 80, 90, and 70. The weights are 1, 2, and 1 respectively.
Step 2: Multiply each score by its weight. Calculate 80 * 1, 90 * 2, and 70 * 1.
Step 3: Add the results of the multiplications together. This gives you the total score: (80 * 1) + (90 * 2) + (70 * 1).
Step 4: Calculate the total of the weights. Add the weights together: 1 + 2 + 1.
Step 5: Divide the total score from Step 3 by the total weights from Step 4. This gives you the weighted mean.
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