Untitled Document

NoteBook Computer Input Devices

AccuPoint, TouchPad, TrackBall

Results

The raw data was recorded in Microsoft Excel. Mean and standard deviation were calculated using Excel's math functions. User Preference was measured by averaging the 3 subjective questions asked for each device (See questionaire in Appendix). The original scale was reversed to show higher number as a high rating.

Statistic Summary

	AccuPoint	TouchPad	TrackBall
Total time (mean)	2.32	2.22	2.38
StDev	0.48	0.51	0.57
Total Error Count (mean)	7.27	6.47	6.93
StDev	2.58	2.26	2.05
User Preference (mean)	2.53	3.05	2.08
StDev	0.91	1.21	0.96

Graphs and Charts

Time for each subject with the 3 devices based on raw data

error counts for each subject with the 3 devices based on raw data

user preference measures scale from 1-5, 5 being high

Avarage time of completion for all 3 devices and its Standard Deviation

Avarage error counts for all 3 devices and its Standard Deviation

Department of Computer Sciences
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