Calculate the weighted mean of the scores 70, 80, and 90 with weights 1, 2, and
Practice Questions
Q1
Calculate 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
Calculate 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. 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.
Weighted Mean – The weighted mean is calculated by multiplying each score by its corresponding weight, summing these products, and then dividing by the total of the weights.
Arithmetic Operations – Understanding how to perform multiplication, addition, and division correctly is essential for calculating the weighted mean.
