Question

Profits of 20 consumer food companies are shown.
(a) Convert the data to ranks. Check the column sums.
(b) Calculate Spearman's rank correlation coefficient. Show your calculations.
(c) At α = .01 can you reject the hypothesis of zero rank correlation?
(d) Check your work by using MegaStat.
(e) Calculate the Pearson correlation coefficient (using Excel).
(f) Why might the rank correlation be preferred?


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  • CreatedAugust 19, 2015
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