In an earlier article, we examined a large dataset of rating scale data. After analyzing over 100,000 individual responses from 4,048 multipoint items across 25 studies, we reported the typical standard deviations for five-, seven-, and eleven-point items. We found that the average standard deviation tended to be around 25% of the maximum range of
When working with UX metrics (e.g., rating scale data) you need to consider both the average and the variability of the responses. People have different experiences with interfaces, and sometimes they interpret items in rating scales differently. This variability is typically measured with the standard deviation. The standard deviation is a key ingredient in computing
For quantifying the user experience of a product, app, or experience, we recommend using a mix of study-level and task-based UX metrics. In an earlier article, we provided a comprehensive guide to task-based metrics. Tasks can be included as part of usability tests or UX benchmark studies. They involve having a representative set of users
The pandemic had sudden and significant impacts on many industries, including grocery delivery, online meeting software, and vacation rentals. Understandably, people significantly increased their visits to news websites to understand the impacts of the virus and governments’ responses to it. Fake news and misinformation; fact-checkers who need fact-checkers: it’s become challenging to disentangle the biases
Online grocery shopping has increased substantially over the past few years due to the COVID-19 pandemic. In 2019, online grocery sales grew steadily, but they accounted for only a modest portion of sales. Now, online grocery sales are booming, with estimated annual sales of 97.7 billion in 2021, an impressive 57% increase for the market
When we think of how the internet has changed commerce, we often consider our ability to browse and purchase products from around the world easily from the comfort of our homes with our mobile phones. But the internet has also enabled millions of people to easily sell their products to global consumers. That selling often
Can an experience be useful without meeting your needs? The UX-Lite™ is a new questionnaire that evolved from the SUS and the UMUX-Lite. It has only two items, one measuring perceived Ease and one measuring perceived Usefulness, as shown in Figure 1. Because the verbal complexity of the original Usefulness item stands in stark contrast
Happy New Year from all of us at MeasuringU®! In 2021 we posted 49 articles and welcomed several new clients to our UX testing platform MUIQ®, where we continue to add new features to reduce the friction in developing studies. We hosted our eighth UX Measurement Bootcamp, again as a virtual event. Going virtual still
In a previous article, we described three ways to estimate SUS scores from UX-Lite™ (and UMUX-Lite) scores, using either both items (perceived measures of Ease and Usefulness) or the Ease item only: Two-item interpolation: Scaling the mean of both items to a 100-point scale (Lite). One-item interpolation: Scaling just the Ease item to a 100-point
If you build it, they will come. That may work for a field of dreams. But when it comes to software and products, if you want people to stay and use the product, it had better be useful and usable. Or, at least, the users should think that it will be useful and usable. That’s
