wilcoxon rank sum test

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    Wilcoxon rank-sum test report results when Mdns are the same

    I understand that Medians should be reported when writing results of Wilcoxon rank-sum test. For example: "For alcohol users depression levels were significantly lower on Wednesday (Mdn = 7.50) than on Sunday (Mdn = 16.0), p = .012, r = −.45." But suppose that p=.012 but Mdn=7.50 on Wednesday...
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    Wilcoxon Rank Sum Test Question

    2. Intermittent fasting (IF) consists of repetitive bouts of short-term fasting. It is of potential interest because it may provide a simple tool to improve insulin sensitivity in individuals with insulin resistance. (the latter increases the likelihood of type diabetes and heart disease). An...
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    Trying to find MS Excel Wilcoxon Rank Sum test example

    I am a pharmacy student doing a 4th year (final year) Capstone Research Project. I am attempting to run my data utilizing a Wilcoxon Rank Sum Test on MS Excel. I was wondering if anyone had any ideas of a good tutorial on how to do that? I've searched YouTube but it was not helpful in...
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    3 values ordinal variable: Mann-Whitney or Chi-squared?

    Hello, I have an ordinal variable which assumes only 3 values. I need to do a comparison between 2 treatments. I used Mann-Whitney test, since is an ordinal. My "p-value" is quite high (0.9388) which is strange because the values distribution is quite different for each group. Then I...
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    Test to compare difference between median value in two discrete samples

    Hi, I have two collection of ordinal samples for a discrete variable related to two administration of an experiment. Using Kolmogorov-Smirnov, I checked that I can't reject the Ho Hypothesis that the two distribution are the same. Now I would like to check if the median of these two collection...
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    R Test for Significance - ANOVA?

    The Data set; 3 sample types (this includes the control) with 2 treatment types, treatment applied every 2 days for 30 days. I know the 2 treatments will produce different results are am not testing for difference between them, interest is in the three sample types and how they handle a...
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    [PQRS] Wilcoxon rank sum test - what distribution to fill in

    See attached picture - I know one of the values is 4 because there are 4 observations in each group, but is that m or n in PQRS, and why is the other a 4 as well? What does it represent? Thanks in advance, Joli
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    Min sample size for Wilcoxon Rank Sum test

    Hi, I have data measurements (eg, running cost) that keep coming in to the system continuously. There are two groups (say X and Y) that I want to compare. I want to see which one is systematically larger (H1: X > Y?). However, I have a couple of issue with my data: i) I can't assume normality...
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    Question about Rank Sum Test

    The file CO2.csv contains information about the CO2 uptake of trees in two locations. The first few lines of the file are > co2[1:5,] Type uptake 1 Quebec 16.0 2 Quebec 30.4 3 Quebec 34.8 4 Quebec 37.2 5 Quebec 35.3 > Perform a nonparametric test to determine if the uptake is the...
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    Wilcoxon rank sum test on Cross Validation Results

    Hi Guys, I would like to compare the recognition times of two different object detectors. I have let's say 1000 labeled data. Then I do a 10x cross validation (900-training 100-testing). At each cross validation I get 100 detection times (samples) from each method. Therefore, at the end of...