What is a confidence interval? I wanted to know that recently and turned to one of my favorite books: Measuring the User Experience, by Tom Tullis and Bill Albert. And here’s what they say:
“Confidence intervals are extremely valuable for any usability professional. A confidence interval is a range that estimates the true population value for a statistic.”
Then they go on to explain how you calculate a confidence interval in Excel. Which is fine, but I have to admit that I wasn’t entirely sure that once I’d calculated it, I really knew what I’d done or what it meant. So I trawled through various statistics books to gain a better understanding of confidence intervals, and this column is the result. Read More
User research is cool. User research deliverables can even be cool. But sadly, to many people, analysis isn’t cool. Clients and project team members get excited by the idea of user research, they like being able to say they did user research, and they like to show off impressive user research deliverables. But the unsung-hero, who does much of the heavy lifting is analysis. Unfortunately, analysis remains underappreciated and is often overlooked.
There are plenty of books, articles, and presentations about user-research techniques and deliverables, but they seldom discuss analysis—the process that transforms research data into deliverables. To some, it may even seem that you come out of research with a fully formed understanding of users and their tasks and immediately begin creating personas, diagrams, and presentations. Read More
You’ve just completed a readout of your latest ground-breaking research, presenting an hour-long slideshow, and hopefully, you’ve wowed your audience with what you’ve shown them. But all too often, after you’ve reported your research results, everyone returns to their workspace and develops a serious case of insight amnesia. Stakeholders quickly forget the juicy morsels of information that would make your company’s products better. Your insights remain stuck in your slide deck and may never again see the light of day.
There are two questions that arise from this dilemma: First, how can you make your research insights more readily available to product teams so they don’t have to slog through your deck to find them? There are multiple, well-known solutions to this problem. The second problem, which is the focus of this article, is how can you ensure that your product team uses your research insights? Read More