Research Article

Evaluation of a Navigation Radio Using the Think-Aloud Method

Figure 7

Cumulative usability problems found as a function of number of subjects. Note: this figure determines the % of problems (out of 64 total) found utilizing data from subjects in the order they were tested. So, combining the data of subjects 1 and 2, 38/64 = 59% of the problems were found.
705086.fig.007