Confidence Interval Calculator for a Completion Rate Jeff Sauro • October 1, 2005 Use this calculator to calculate a confidence interval and best point estimate for an observed completion rate. This calculator provides the Adjusted Wald, Exact, Score and Wald intervals.Download this calculator in an excel file Explanation The Adjusted Wald method should be used almost all the time. Adjusted Wald Method The adjusted Wald interval (also called the modified Wald interval), provides the best coverage for the specified interval when samples are less than about 150. Exact Method The Exact method was designed to guarantee at least 95% coverage, whereas the approximate methods (adjusted Wald and Score) provide an average coverage of 95% only in the long run. Score Method The Score method provided coverage better than the Exact and Wald methods but falls short of the adjusted Wald method. Wald Method The Wald method should be avoided if calculating confidence intervals for completion rates with sample sizes less than 100. When All Users Pass or Fail
SocialBase - oneforty A 2010 Edison research study showed that 42% of respondents hear about products and services through Twitter. In response to this dynamic businesses are increasingly using Twitter to engage with customers, reach the media directly, and further establish themselves as thought leaders in their industry. You can even use Twitter for lead management or marketing automation. Listen to our free webinar with Laura Fitton, HubSpot's Inbound Marketing Evangelist, as she reveals the basics of Twitter and how you can use the channel for marketing and PR. Laura shares some established Twitter marketing processes, best practices, and examples of successful case studies. In this 50-minute webinar, you will learn: What is Twitter and why is it importantHow to use Twitter to monitor your brand and engage customers and prospects directlyHow to reach media and bloggers directly to get PR coverage for your businessHow to measure your performance on Twitter Webinar Details Speaker: Laura Fitton (pistachio)
Seesmic First Principles of Interaction Design The following principles are fundamental to the design and implementation of effective interfaces, whether for traditional GUI environments, the web, mobile devices, wearables, or Internet-connected smart devices. Help! This is a huge revision. This revision features new examples and discussion involving mobile, wearables, and Internet-connected smart devices. What has changed greatly is the level of detail: You will find many new sub-principles within each category, along with far more explanation, case studies, and examples. Previous Version & Its Translations. Introduction Effective interfaces are visually apparent and forgiving, instilling in their users a sense of control. Because an application or service appears on the web or mobile device, the principles do not change. I Love Apple, But It’s Not Perfect I’ve used many example drawn from Apple products here, often as examples of bad interface practices. Please do not take from this document that I am somehow an Apple hater. Top Color
NetVibes Why Consistency is Critical "A foolish consistency", according to Ralph Waldo Emerson, "is the bugbear of small minds". Many developers would agree wholeheartedly with that sentiment — particularly if they’ve had "consistency" forced upon them by over-zealous usability people. Users Need Consistency There is little doubt that consistency is important for users. Consistency makes sites easier to use, because visitors don’t have to learn new tricks as they move around. Sites should be internally consistent: standards and conventions should be established and applied throughout all the content. Sites also need to be externally consistent, that is, consistent with general practice. Consistency Makes Sense Consistency makes business sense. While some developers consider consistency to be a straitjacket, it also has many benefits. Aspects of Consistency Consistency applies to many elements within a Website. Language Is a "twin overhead cam" the same as a "double overhead camshaft"? You should also have a consistent "voice".
Think Alouds Shed Light on How Students Grapple with Content January 6, 2012 By: Maryellen Weimer, PhD in Teaching Professor Blog One of the enduring legacies of the classroom assessment movement (thank you Pat Cross and Tom Angelo) is that most faculty now realize that if they want to know how well something worked to promote learning in the classroom, they can’t just rely on what they think. They need to support what they think with feedback from students and, if that feedback doesn’t agree with what they think, they need to listen carefully to what the students said. Building on that foundation, the scholarship of teaching movement has shown faculty that they can “study,” as in systematically inquire about, what’s happening in their classrooms. Increasingly, instructors’ examinations of their teaching and their students’ learning are finding their way into the pedagogical literature. Think alouds were originally developed by cognitive psychologists as a research tool to study how people solved problems. Reference: Calder, L. (2006).
Comprehensive Review Of Usability And User Experience Testing Tools - Smashing UX Design Advertisement Usability and user experience testing is vital to creating a successful website, and only more so if it’s an e-commerce website, a complex app or another website for which there’s a definite ROI. And running your own user tests to find out how users are interacting with your website and where problems might arise is completely possible. But using one of the many existing tools and services for user testing is a lot easier than creating your own. Free And Freemium Tools A ton of free and freemium tools are out there to test your website’s usability and user experience. Ethnio Ethnio enables you to intercept visitors on your website and recruit them to help you with research (you can offer incentives to make participation more enticing). Simple Mouse Tracking Mouse tracking is a great way to see how visitors are actually interacting with your website. xSort xSort is a card-sorting application for Mac OS X. AddUse AddUse enables you to conduct user surveys and user tests. (al)
Usability's role in market research - UPA 2005 Idea Market Activator: Stephanie Brawner, Sage Software The Activator's Initial Questions How do you define “market research”? Compare that with “user research”. Do you see them as distinct disciplines or have the lines between them become blurred? Comparing the two types of research Our group first discussed the following distinctions between “market” and “user” research. Many in our group agreed that the disciplines have different approaches and their own strengths and weaknesses, but sometimes share common goals and inform one another. Types of research we are doing The lines between the two types of research are becoming more blurred in our profession, as many in the discussion group practice a hybrid of both types of research at their companies. Several people mentioned they have had success combining a usability test and focus group using the same participants. “Voice of the Customer” and “Six Sigma” Communicating our value for non-user interface research Language change
Usability News 81 - Shaikh2 By A. D. Shaikh & K. Lenz Summary. In 2001, Bernard conducted a survey to determine the expected location for a variety of web objects. Today, a larger, more diverse group of users access the internet on a regular basis. Participants Undergraduate psychology students (N=142; 50 males and 92 females) received course credit for completing a survey regarding the expected location of navigational elements commonly found on informational websites. Procedure A methodology similar to that used by Bernard (2001) was used. All stickers were presented in the same size, one square, to avoid any restrictions on placement. Frequencies were calculated for each web object for the 25 grid squares (Figure 1). The figures reveal that most participants had an expected location for each of the presented web objects. Figure 1. As shown in Figure 2, participants (44%) expected the "Back to Home" link to be in the upper left corner of the web page. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Home Link.
22 Essential Tools for Testing Your Website's Usability The Web Design Usability Series is supported by join.me, an easy way to instantly share your screen with anyone. join.me lets you collaborate on-the-fly, put your heads together super-fast and even just show off. A site's ease of use, or its usability, is an integral part of its success, especially with websites becoming more and more interactive, complex and packed with features. User-centered design is all about building websites that fulfill the goals and desires of its users, and at the heart of this concept is that a user must be able interact with your website effectively. Testing usability is an art and a science. In this post, we'll discuss six crucial factors that affect usability. We'll focus on practical usability testing, so the emphasis is on pragmatic and inexpensive strategies that most site owners can do. What other tools have you used to test website usability? 1. The first thing that must be done is determine what the core user tasks are. 2. 3. 4. 5. 6.
10 Useful Usability Findings and Guidelines - Smashing UX Design Advertisement Everyone would agree that usability is an important aspect of Web design. Whether you’re working on a portfolio website, online store or Web app, making your pages easy and enjoyable for your visitors to use is key. Many studies have been done over the years on various aspects of Web and interface design, and the findings are valuable in helping us improve our work. 1. A study by UX Matters found that the ideal position for labels in forms is above the fields. Tumblr features a simple and elegant sign-up form that adheres to UX Matter’s recommendation. Positioning labels on the left also poses another problem: do you left-align or right-align the labels? 2. People instinctively notice other people right away when they come into view. Eye-tracking heat map of a baby looking directly at us, from the UsableWorld study. And now the baby is looking at the content. Here’s an eye-tracking study that demonstrates this. 3. 4. Basecamp makes great use of space. 5. 6. 7. 8. 9. 10.