Assignment 6: Building a Predictive Model
Familiarize yourself with the basic concepts of evaluation by reading the relevant chapters in the textbook, the slide deck, and the MTE User's Guide.
Detailed Instructions
The goal of this assignment is to evaluate the performance of two input devices and build a predictive cursor positioning model. You may compare any two devices, for instance a touchpad and a mouse or a touch pad and finger touch. Your study should collect usage data for at least 8 subjects, so you need to collaborate with other groups to get the minimum number of participants for your study.
- Conduct an experiment that establishes the cursor positioning time for your two input devices using the experiment configuration provided. For each input device, state your Fitts model (in the form MT = a + bID), the average error rate, and the device’s performance index (1/b).
- Using Excel, determine the differences in the mean positioning time between the two devices and state whether that difference is statistically significant. You may use any statistical test that you feel is appropriate, but it is recommended that you use a two-tailed unpaired t-test.
- Write a report that shows how you did your study and that explains your results. Include any charts, plots, or tables that may help you better explain your results. Clearly state which device is “better”. You must follow the attached sample study report as a template.
Resources Required
Total Number of Earnable Points: 70 Points
Approximate Time to Complete: 6-8 Hours
Due Date: see Syllabus or Blackboard
Approximate Time to Complete: 6-8 Hours
Due Date: see Syllabus or Blackboard