How do you calculate a wieghted average?

Question

I feel silly but I don't know how to figure it out. Like when one grade is worth 10% of your grade and one grade is worth 20% and so on and so on, how do you figure out your final grade? And don't worry it is not a grade for a math class!!!!

Answer 1

Multiply the value of each grade by its weight in the form of a decimal, and add them all together. For example, if you got a grade of 82 on a test that was worth 30% of your grade, the contribution of that score towards your final grade would then be 82*0.30 = 24.6.

Here's a fully worked scenario, where each score is followed by its weight.

77 - 20%
78 - 20%
71 - 20%
93 - 40%

The final grade is 77*0.2 + 78*0.2 + 71*0.2 + 93*0.4 = 82.4. If the grades had been weighted equally, the average would have just been (77 + 78 + 71 + 93) / 4 = 79.75.

Answer 2

A weighted primary potential you're taking an primary of a few values, yet you're giving extra attention to a pair values in that primary over others. the least perplexing occasion may be grading college paintings. Say you have 3 assessments and an extremely final examination. A right now primary might advise each and every attempt + the perfect may be fairly worth 25% of your very final grade each and every. A weighted primary may be if the perfect counted forty% and all the three attempt counted 20% each and every, as an occasion. yet another occasion might desire to be score soccer communities, the place extra "weight" is given to video games performed against good combatants vs undesirable combatants while determining there primary standings.

Answer 3

Hi. Multiply each grade by the weight assigned to it and add the results. Example: You scored 80, 85, and 90 on tests that count for 25, 35, and 40% of your grade. Your weighted average is .25*80 + .35*85 +.4*90 = 85.75. Good luck!