HCILecture_Week5C - , ^ > , ^ Z d / / & Y Z D W D...

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Evaluation: Randomised Controlled Trials (2) Human-Computer Interaction Comp 3900 and Comp 6390 Semester 2, 2010 1 Lecture 5C: Human-Computer Interaction, Semester 2, 2010
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From the previous lecture Quantitative evaluation (for our surgical training example) A sample of 16 surgical trainees Control for variation of capabilities within the sample Randomly allocate the members of the sample to each of two experimental groups (new and control) Lecture 5C: Human-Computer Interaction, Semester 2, 2010 2 Conduct the experiment: Control for factors/variables that you do not want to contribute to the outcomes Measure the outcome variables Perform statistical analysis on the measurements Make judgements about what the statistical analysis tells you
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Hypothesis (1) Examples: “Our hypothesis is that male computer science students have a lower level of cardiovascular fitness than the general student population” Lecture 5C: Human-Computer Interaction, Semester 2, 2010 3 “Our hypothesis is that the new ANU webmail system allows students to manage their email with
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HCILecture_Week5C - , ^ > , ^ Z d / / & Y Z D W D...

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