I am studying when using non-parametric statistical hypothesis test, I have an example says that in a Boxing arena we pick a sample of 20 people. We ask them how much time they watch boxing in TV in a week and we want compare if we have differences between people younger than 40 and older than forty. What test would be better? I think it is Mann Whitney, but in my book, it says we work with two samples and in this case we only work with one. could you help me? Thanks.
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1Possible duplicate of Is the W statistic output by wilcox.test() in R the same as the U statistic? – mkt May 03 '18 at 18:29
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3You actually do have two samples, one for people younger than 40 and one for people older than 40. – jbowman May 03 '18 at 21:55
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then, should I use Mann Whitney? Other option would be to use ANOVA, what do you think? Thanks – Pernell Morrison May 04 '18 at 19:14