What is the weighted mean of the scores 70, 80, 90 with weights 1, 2, 3 respecti

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Question: What is the weighted mean of the scores 70, 80, 90 with weights 1, 2, 3 respectively?

Options:

Correct Answer: 85

Solution:

Weighted mean = (70*1 + 80*2 + 90*3) / (1 + 2 + 3) = 85.

What is the weighted mean of the scores 70, 80, 90 with weights 1, 2, 3 respectively?

What is the weighted mean of the scores 70, 80, 90 with weights 1, 2, 3 respectively?

Correct Answer: 85

Step 1: Identify the scores and their corresponding weights. The scores are 70, 80, and 90, and the weights are 1, 2, and 3.
Step 2: Multiply each score by its weight. Calculate 70*1, 80*2, and 90*3.
Step 3: Add the results of the multiplications together. This gives you the total weighted score.
Step 4: Add the weights together. This gives you the total weight.
Step 5: Divide the total weighted score by the total weight to find the weighted mean.

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