This paper is from Session 9B: Modeling, randomization and simulation tools for connecting data and chance

which comes under Topic 9: Technology in statistics education

StatKey: online tools for bootstrap intervals and randomization tests

Presenter

• Kari Lock Morgan (Duke University, United States)

Co-authors

• Dennis Lock (Iowa State University, United States)
• Eric Lock (Duke University, United States)
• Patti Frazer Lock (St. Lawrence University, United States)
• Robin Lock (St. Lawrence University, United States)

Abstract

StatKey (www.lock5stat.com/StatKey) is free online technology created by the Lock family, designed to help introductory students understand and easily implement bootstrap intervals and randomization tests. Randomization-based methods make the fundamental concepts of statistical inference more visual and intuitive, free professors to cover inference earlier in the course, and help students see connections that are otherwise lost with numerous different formulae. To make these methods accessible to all introductory students, our goal was to create technology that is free, widely available (StatKey works in any common web browser), very easy to use, and which helps build conceptual understanding. Although particularly designed for randomization-based methods, StatKey can also be used for illustrating descriptive statistics, sampling distributions, confidence intervals, simple linear regression, and as a replacement for the distributional tables found in the back of many textbooks.