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Impact of Object Diameter on Selection Time in Experimental IT Research

This experimental study investigates how the diameter of an object affects selection time in IT analysis tasks. Conducted as a within-subjects design, participants were tasked with selecting objects of varying diameters (25 mm, 30 mm, and 40 mm) as quickly as possible. The main dependent variable measured was selection time. We utilized a one-way within-subject ANOVA for parametric analysis and the Friedman test for non-parametric analysis of variance. Participants were also instructed to download assignments and report ratings and errors in an Excel sheet.

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Impact of Object Diameter on Selection Time in Experimental IT Research

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  1. Experimental Research in ITAnalysis – practical part Hanna Venesvirta

  2. Experimental task: select an object as fast as possible.Depend variable: selection time.One independent variable (diameter of an object) with three levels (diameter: 25, 30, and 40 mm).All the participants made the same task: within subject design. one-way within subject ANOVA.

  3. Parametric tests

  4. size

  5. size

  6. Non-parametric one way within subjects analysis of variance:Friedman test

  7. Post hocs for Friedman: Wilcoxon Repeated Measures Signed-Rank test

  8. Break. Coffee etc. 15 minutes.

  9. Task: download the assignments from the course web page (schedule -> week 16).See the sheets ”ratings” and ”errors” – further instructions there.You can report (if there is anything to report!) in the excel sheet.

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