| 释义 |
weighted average
weighted average n (Statistics) an average calculated by taking into account not only the frequencies of the values of a variable but also some other factor such as their variance. The weighted average of observed data is the result of dividing the sum of the products of each observed value, the number of times it occurs, and this other factor by the total number of observations Translationsweighted average
weighted average[′wād·əd ′av·rij] (statistics) The number obtained by adding the product of αi times the i th number in a set of N numbers for i = 1,2,…, N, where αi are numbers (weights) such that α1+ α2+ ⋯ + αN = 1. Also known as weighted mean. Weighted Average
Weighted AverageAn average in which some values count for more than others. For example, if an index consisting of 10 stocks is weighted for price, this means that the average price of the stocks will move more when the stocks with higher price move. Most indices use weighted averages so that "smaller" values do not affect the index inordinately. This helps correct for the fact that averages tend to be affected by extreme values. One of the most common ways of weighting an average is to weight for market capitalization.See WAVG
See WA |