What is the weighted mean of the scores 70, 80, and 90 with weights 1, 2, and 3
Practice Questions
Q1
What is the weighted mean of the scores 70, 80, and 90 with weights 1, 2, and 3 respectively?
80
85
90
75
Questions & Step-by-Step Solutions
What is the weighted mean of the scores 70, 80, and 90 with weights 1, 2, and 3 respectively?
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. For 70 with weight 1, calculate 70 * 1 = 70. For 80 with weight 2, calculate 80 * 2 = 160. For 90 with weight 3, calculate 90 * 3 = 270.
Step 3: Add all the results from Step 2 together. So, 70 + 160 + 270 = 500.
Step 4: Add all the weights together. So, 1 + 2 + 3 = 6.
Step 5: Divide the total from Step 3 by the total from Step 4. So, 500 / 6 = 83.33.
Step 6: Round the result if necessary. In this case, the weighted mean is approximately 83.33.
