Elizabeth, To be honest, unless you've got just two audience segments (personas) then I'd suggest you look at whether or not you can talk to all of them in some form. Barring that, I'd suggest around 10 users per estimated persona. As a minimum, I'd be aiming at 24-30.
Steve 2008/7/14 Elizabeth Parham <[EMAIL PROTECTED]>: > - apologies for posting this in the wrong place the other day, was trying > to > do things in a hurry :-( > > > Hello, > > I have to do a proposal including timings for a solution in which there > will > be 300 end users of a new system aimed at improving efficiency in the work > place by using technology where before things were done on paper or over > the > phone. > > What percentage of these 300 do I need to observe in their place of work, > interview and so on for the information to be representative of the whole? > > - I want to get enough information to be able to develop personas and > wondered if there were guidelines regarding the numbers and statistics for > getting it right. > > Many thanks! > -- ---------------------------------------------- Steve 'Doc' Baty B.Sc (Maths), M.EC, MBA Principal Consultant Meld Consulting M: +61 417 061 292 E: [EMAIL PROTECTED] UX Statistics: http://uxstats.blogspot.com Member, UPA - www.upassoc.org Member, IA Institute - www.iainstitute.org Member, IxDA - www.ixda.org Contributor - UXMatters - www.uxmatters.com ________________________________________________________________ Welcome to the Interaction Design Association (IxDA)! To post to this list ....... [EMAIL PROTECTED] Unsubscribe ................ http://www.ixda.org/unsubscribe List Guidelines ............ http://www.ixda.org/guidelines List Help .................. http://www.ixda.org/help
