## Wikipedia - متوسط موزون (ar) Wikipedia - متوسط وزني (ar) weighted mean

https://doi.org/10.1351/goldbook.W06670
If in a series of observations a @[email protected] ($$w_{i}$$) is assigned to each value, a weighted mean $$\overline{x}_{w}$$ can be calculated by the formula: $\overline{x}_{w}=\frac{\sum w_{i}\ x_{i}}{\sum w_{i}}$
Source:
PAC, 1994, 66, 595. (Nomenclature for the presentation of results of chemical analysis (IUPAC Recommendations 1994)) on page 599 [Terms] [Paper]