Task 3 a) Tullis and Albert (2013) have set down a few rules regarding the sample size in usability testing. Use the general internet to find any 5 online sources which cover sample sizes in usability testing and complete the table below (reproduce the table as it is, then complete the bottom five rows). Provide the URLs to your sources below the table. 5 marks Source Condition Number of participants Tullis and Albert OK to miss major issues 5-10 Tullis and Albert One distinct user group 5-10 Tullis and Albert Scope of design is limited 5-10 Tullis and Albert Need to capture as many > 10 issues as possible Tullis and Albert More than one distinct user > 10 group Tullis and Albert Scope of design is large > 10 Internet source 1 Internet source 2 Internet source 3 Internet source 4 Internet source 5 Internet source 1 URL: Internet source 2 URL: Internet source 3 URL: Internet source 4 URL: Internet source 5 URL: b) Summarise what you have learned from the table in a single paragraph and as it relates to the number of participants to use given all conditions in the table. 3 marks Task 3 a) Tullis and Albert (2013) have set down a few rules regarding the sample size in usability testing. Use the general internet to find any 5 online sources which cover sample sizes in usability testing and complete the table below (reproduce the table as it is, then complete the bottom five rows). Provide the URLs to your sources below the table. 5 marks Source Condition Number of participants Tullis and Albert OK to miss major issues 5-10 Tullis and Albert One distinct user group 5-10 Tullis and Albert Scope of design is limited 5-10 Tullis and Albert Need to capture as many > 10 issues as possible Tullis and Albert More than one distinct user > 10 group Tullis and Albert Scope of design is large > 10 Internet source 1 Internet source 2 Internet source 3 Internet source 4 Internet source 5 Internet source 1 URL: Internet source 2 URL: Internet source 3 URL: Internet source 4 URL: Internet source 5 URL: b) Summarise what you have learned from the table in a single paragraph and as it relates to the number of participants to use given all conditions in the table. 3 marks