Another approach to the data analysis is to use the eye, rather than the person, as the
Question:
(a) Construct the ANOVA table and bracket the P-value for the F test. Compare with the P value obtained in Exercise 11.S.3. Which of the two P-values is of doubtful validity, and why?
(b) The mean refractive error for the sex-linked RP patients was -3.30. Calculate the standard error of this mean two ways: (i) regarding the person as the observational unit and using Spooled from the ANOVA of Exercise 11.S.3; (ii) regarding the eye as the observational unit and using Spooled from the ANOVA of this exercise. Which of these standard errors is of doubtful validity, and why?
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Statistics For The Life Sciences
ISBN: 9780321989581
5th Edition
Authors: Myra Samuels, Jeffrey Witmer, Andrew Schaffner
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