Unit 1- Weighted Averages

Front

What is a weighted average?

Back

A weighted average is an average that takes into account the relative importance or weight of each value in a data set. It is calculated by multiplying each value by its weight, summing these products, and then dividing by the total weight.

Front

How do you calculate a weighted average?

Back

To calculate a weighted average, multiply each score by its corresponding weight, sum all the products, and then divide by the total of the weights.

Front

What is the formula for calculating the final grade using weighted averages?

Back

Final Grade = (Score1 * Weight1 + Score2 * Weight2 + ... + ScoreN * WeightN) / (Weight1 + Weight2 + ... + WeightN)

Front

If tests contribute 50%, quizzes 20%, homework 15%, and classwork 15%, what is the total weight?

Back

The total weight is 100%.

Front

What is the contribution of quizzes if the quiz average is 90 and quizzes contribute 20%?

Back

The contribution of quizzes to the final grade is 90 * 0.20 = 18.

Front

How do you find the average of a set of scores?

Back

To find the average, sum all the scores and divide by the number of scores.

Front

What is the significance of weights in calculating averages?

Back

Weights determine the influence of each score on the final average, allowing for a more accurate representation of performance based on the importance of each component.

Front

Calculate the overall grade if assignments (30%) = 85, quizzes (20%) = 90, project (20%) = 88, final exam (30%) = 86.

Back

Overall Grade = (85*0.30 + 90*0.20 + 88*0.20 + 86*0.30) = 87.6.

Front

What is the weighted average of scores 75, 80, 85 with weights 30% each?

Back

Weighted Average = (75*0.30 + 80*0.30 + 85*0.30) = 80.

Front

If a student scores 78, 82, 85 in quizzes (25% each), what is the average quiz score?

Back

Average Quiz Score = (78 + 82 + 85) / 3 = 81.