A human factors psychologist studied three computer keyboard designs. Three samples of individuals were given material to type on a particular keyboard, and the number of errors committed by each subject was recorded. The data are as follows: Keyboard A: 0, 4, 0, 1, 0 Keyboard B: 6, 8, 5, 4, 2 Keyboard C: 6, 5, 9, 4, 6 Does typing performance differ significantly among the three types of keyboards? Calculate G What is the correct decision for the hypothesis tes
A human factors psychologist studied three computer keyboard designs. Three samples of individuals were given material to type on a particular keyboard, and the number of errors committed by each subject was recorded. The data are as follows:
Keyboard A: 0, 4, 0, 1, 0
Keyboard B: 6, 8, 5, 4, 2
Keyboard C: 6, 5, 9, 4, 6
Does typing performance differ significantly among the three types of keyboards?
Calculate G
What is the correct decision for the hypothesis test?
Calculate eta-squared (η2) to estimate effect size.
Perform a Tukey test and tell which treatments (if any) are significantly different from each other. (Use α = .05)
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