[pdf]<\/span> which assessed the perceived usability of a task. One was ordinal (the SEQ), one interval (the SMEQ) and one ratio (a version of Usability Magnitude Estimation (UME) ).<\/p>\nWe found that there was indeed some added benefit to the interval scaled SMEQ but it was only modest and it may have simply come from providing users with more response options. The SEQ has only 7 whereas the SMEQ had thousands of response options.<\/p>\n
In applied research we are in most cases interested in determining which product or design generates higher scores, whether these be on satisfaction, usability or loyalty. The magnitude of the difference is also important\u2013a 2 point difference is likely more noticeable to users than a \u00bc point difference. But even if you were to commit the error and say that users were twice as satisfied on one product you’ve almost surely identified the better of two products even if the actual difference in satisfaction is more modest.<\/p>\n","protected":false},"excerpt":{"rendered":"
It’s fine to compute means and statistically analyze ordinal data from rating scales. But just because one rating is twice as high as another does not mean users are really twice as satisfied. When we use rating scales in surveys, we’re translating intangible fuzzy attitudes about a topic into specific quantities. Overall, how satisfied are […]<\/p>\n","protected":false},"author":2,"featured_media":11062,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"_price":"field_56e41332a1ae5","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"footnotes":""},"categories":[9,21],"tags":[10,22],"acf":[],"ticketed":false,"_links":{"self":[{"href":"https:\/\/measuringu.com\/wp-json\/wp\/v2\/posts\/70"}],"collection":[{"href":"https:\/\/measuringu.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/measuringu.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/measuringu.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/measuringu.com\/wp-json\/wp\/v2\/comments?post=70"}],"version-history":[{"count":0,"href":"https:\/\/measuringu.com\/wp-json\/wp\/v2\/posts\/70\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/measuringu.com\/wp-json\/wp\/v2\/media\/11062"}],"wp:attachment":[{"href":"https:\/\/measuringu.com\/wp-json\/wp\/v2\/media?parent=70"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/measuringu.com\/wp-json\/wp\/v2\/categories?post=70"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/measuringu.com\/wp-json\/wp\/v2\/tags?post=70"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}