# GeoTUI::Results - Study 2 06 March 2007 Experiments at the IFP (Prototype version 3) GUI / Mouse TUI / 1-puck prop TUI / 2-puck prop TUI / ruler prop

 Cutting planes performed [GUI / Mouse] [TUI / 1-puck prop] [TUI / 2-puck prop] [TUI / Ruler prop] Scoring of cutting planes performed: [ 1 2 3 4 ] Exact Nearly exact Quite far Absurd Caption : Green : border of the map. Red : cutting line expected. Blue : cutting line performed by the user.
 Times to perform a cutting line Exercise 1 Exercise 2 Average for exercises 1 and 2 Box plots and average times per interaction to select a cutting line. The performances for the four conditions of interaction differed significantly: (one-way analysis of variance) In the first exercise: F3,44=19.18, p<.001 In the second exercise: F3,44=4.96, p<.001 In both exercises: F3,92=11.79, p<.001 Results of significance of the differences between the averages: Positioning of the hands Exercises 1 and 2 Distribution of one-handed manipulations (left and right hand) and two-handed manipulations of props, and percent of subjects who kept, at least once, one hand on the validation pad during a series of several cutting planes.
 Number of cutting lines performed Exercises 1 and 2 Averages numbers of cutting planes performed for each exercise, using different interactions. Results of significance: Calculation of significance * One-way analysis of variance were performed using the Analysis Tools of MS Excel. * Paired t tests and Wilcoxon Signed Rank tests were performed using the following web calculators: t-Value and p-Value: http://faculty.vassar.edu/lowry/t_corr_stats.html z-Value and p-Value: http://faculty.vassar.edu/lowry/wilcoxon.html * Paired t tests were also performed using the following formula in a spreadsheet to calculate the t-Value: (Extracted from: http://mathworld.wolfram.com/Pairedt-Test.html) Given two paired sets and of measured values. and are the average of and , respectively. Let   and   Define by This statistic has degrees of freedom. and then the associated p-Value was obtained using the following web calculator: http://www.danielsoper.com/statcalc/calc08.aspx

Last modification : 03 April 2007,
Webmaster : g [dot] riviere [at] estia [dot] fr
URL : http://www.estia.fr/~geotui/experiments2/