solution

An experiment to determine feed efficiency at various feeding levels for the walleye (fish) was conducted in a controlled environment. Five levels (labeled TREAT with values of 0.25, 0.75, 1.00, 2.00, and 3.00 units) of a major feed component were each randomly assigned to four buckets containing three fish each. There are a total of 20 buckets. After 10 weeks, the following measurements were recorded for each fish: WEIGHT: weight in grams, LENGTH: length in millimeters, and RELWT: relative weight, which is the actual weight divided by a length-specific standard weight. Perform the appropriate analysis of each response variable independently. The data set, consisting of 60 observations, is available as datatab_10_exr13 on the text Web site. Using individual fish measurements makes this a nested design. If all you had was the total weight of the three fish in each bucket, how would you carry out the analysis? Would you get the same result?

 
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