A human factors psychologist studied five computer keyboard designs to see which ...

A human factors psychologist studied five computer keyboard designs to see which was easiest to use. Five samples of individuals were given material to type on a particular keyboard and the number of errors made by each individual was recorded. The human factors psychologist was able to analyze the data, but spilled coffee on the results. Therefore, she needs a good statistics student (i.e., you!) to help her reconstruct her table and interpret her results.

a.First, help her recreate her source table

Source

Between

21.53

Within

Total

332.32

b.Using the source table, what do you conclude about the keyboards? Be sure to state your critical value, using α = .05. Interpret your results. Should you tell the researcher to conduct post hoc tests and effect size? Why or why not?

8 years ago

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For the Df Total to be 49, the number of samples should be 10 each making 10 * 5 = 50 ...

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