if anyone is in grade 7 trying to find this answer, sorry I am not too sure know, just wanted to be first
You have what's known as a weighted average. The 80 score is weighted more heavily than the 91 score, so the weighted average will be closer to 80 than a non-weighted average. 0.85 x 80 = 68 0.15 x 91 = 13.65 68 + 13.65 = 81.65
A weighted mean is when some values contribute more than others. In order to calculate weighted mean multiply each weight by its value, add those and then divide by the sum of the weights.
There is. Arithmetic mean is simple average of numbers not weighted by anything. However in EV, the numbers are weighted by their probability
Depends upon how the project is weighted compared to the rest of the course.
You have to multiply your score and then divide
The arithmetic mean is a weighted mean where each observation is given the same weight.
if anyone is in grade 7 trying to find this answer, sorry I am not too sure know, just wanted to be first
If your textiles coursework is weighted as 60% of your final grade and the exam is weighted as 40%, an A in both would average out to an overall grade of A.
Go on your schools website.ORgrade in class = (exam grade)(amount weighted i.e. 0.2) + (class grade)(amount weighted i.e. 0.8)To find out what you need to get on your exam to get a certain grade in a class:(desired grade in class - (class grade)(amount weighted i.e. 0.8)) / (amount exam in weighted i.e. 0.2) = needed exam gradeFor instance, if you want to make sure you get a 93% overall and you got a 95% so far, and you know that the exam will be 20% of your overall grade:(93 - (95)(0.8)) / 0.2 = 92.5So, to get a 93% in the class you must get an 85% on your exam.
You have what's known as a weighted average. The 80 score is weighted more heavily than the 91 score, so the weighted average will be closer to 80 than a non-weighted average. 0.85 x 80 = 68 0.15 x 91 = 13.65 68 + 13.65 = 81.65
A weighted mean is when some values contribute more than others. In order to calculate weighted mean multiply each weight by its value, add those and then divide by the sum of the weights.
The weighted mean is simply the arithmetic mean; however, certain value that occur several times are taken into account. See an example http://financial-dictionary.thefreedictionary.com/weighted+average
weighted mean is getting the weighted average of students. normally, it is always use in computing the general average of the students to determine the ranking of the whole class.
Geometric mean
The arithmetic mean and the weighted mean are used in different situations. The arithmetic mean is used in frequencies as a general average. The weighted mean is used when different factors contribute to some kind of total for example with weighted index numbers. It is not a matter of accuracy it involves using the right mean in the right situation. Almost always (if not always) a question will specify which mean to use.
"Weighted mean" is the average calculated by taking into account not only the frequencies of the variables but also some other factors such as their variance.