Q: Formula to find the Weighted mean?

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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.

if anyone is in grade 7 trying to find this answer, sorry I am not too sure know, just wanted to be first

There is. Arithmetic mean is simple average of numbers not weighted by anything. However in EV, the numbers are weighted by their probability

In order to find the weighted mean of this set of the data, we need to know the weight for each data in the set, and this information is not given in your question.Definition: When each number ai is to have weight wi, the weighted mean is equal to(w1a1+w2a2 + ... + wnan)/(w1 + w2 + ... + wn).

100 x (standard deviation/mean)

Related questions

Arithmatic Mean

The arithmetic mean is a weighted mean where each observation is given the same weight.

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.

A weighted jump rope, will help you get lean and build muscle, if your wanting to be a bodybuilder. The weighted ones run about $15, and you'll be able to find one at you local sporting goods store.

if anyone is in grade 7 trying to find this answer, sorry I am not too sure know, just wanted to be first

so that they know how much weight they have lost

Risk Weighted Assets