weighted average weighted mean weighted mean weighted mean weighted mean some data points contribute more than others المتوسطة الموزونة weighted mean http://en.wikipedia.org/wiki/Weighted_mean weighted mean weighted mean viktad rating Wikipedia Wikipedia weighted mean Wikipedia weighted mean average Wikipedia weighted mean some data points contribute more than others weighted mean viktad rating some data points contribute more than others viktad rating viktad rating Wikipedia weighted mean weighted mean viktad rating viktad rating Wikipedia some data points contribute more than others weighted mean weighted mean weighted average viktad rating average viktad rating weighted mean Wikipedia weighted average weighted mean average Weighted Mean viktad rating weighted mean weighted mean viktad rating weighted mean viktad rating weighted mean weighted mean weighted average average http://en.wikipedia.org/wiki/Weighted_mean weighted mean weighted mean average some data points contribute more than others weighted mean average Wikipedia viktad rating weighted mean some data points contribute more than others some data points contribute more than others average rating weighted mean Wikipedia weighted Wikipedia weighted mean weighted mean weighted mean http://en.wikipedia.org/wiki/Weighted_mean weighted average المتوسطة الموزونة weighted mean viktad rating some data points contribute more than others weighted mean weighted mean some data points contribute more than others المتوسطة الموزونة weighted mean weighted mean viktad rating viktad rating average weighted mean rror weighted mean weighted mean