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The experiment is a within-subject counterbalanced design with the twelve subjects in four groups (( tex2html_wrap_inline2188 ) of 3 subjects. Since all four permutations are included, statistical results are presented for aggregated groups. Multiple One-way ANOVA tests are used to compare user performance at the 0.05 level of statistical significance. To investigate interface ordering effects and question set differences three-way ANOVA (Interface Order, Task Set, Interface Type) statistics are used.

Eser Kandogan
Sun Sep 13 18:34:46 EDT 1998

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