What is Weighted Arithmetic Mean by kasi | May 31, 2010 | Descriptive statistics | 0 comments Weighted Arithmetic Mean= 850/30=28.33 Therefore the average age of employees working in the office is 28.33 years. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)RelatedPages: 1 2Submit a CommentYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email. Δ