Question: Bob and Tom are paper investors They each buy stocks

Bob and Tom are "paper investors." They each "buy" stocks they think will rise in value and "hold" them for a year. At the end of the year, they compare their stocks' appreciation (percent).
(a) At α = .05, is there a difference in the medians (assume these are samples of Bob's and Tom's stock-picking skills)? Use MegaStat or a similar computer package for the Wilcoxon rank sum test (Mann-Whitney test) calculations.
(b) Perform a two-tailed parametric t test for two independent sample means by using Excel or MegaStat. Do you get the same decision?

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  • CreatedAugust 19, 2015
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