In a Mann-Whitney test, a researcher wants to compare the difference between two independent groups, Group X and Group Y, with respect to a continuous variable. The researcher calculated the U-statistic value to be 400. Given that there are 20 observations in Group X and 30 observations in Group Y, what is the p-value associated with this U-statistic?
In a Mann-Whitney test, a researcher wants to compare the difference between two independent groups, Group X and Group Y, with respect to a continuous variable. The researcher calculated the U-statistic value to be 400. Given that there are 20 observations in Group X and 30 observations in Group Y, what is the p-value associated with this U-statistic?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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In a Mann-Whitney test, a researcher wants to compare the difference between two independent groups, Group X and Group Y, with respect to a continuous variable. The researcher calculated the U-statistic value to be 400. Given that there are 20 observations in Group X and 30 observations in Group Y, what is the p-value associated with this U-statistic?
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Step 1
Introduction:
The Mann-Whitney U test is a non-parametric test used to compare the difference between two independent groups with respect to a continuous variable. The U-statistic is calculated as the sum of the ranks of the observations from one group that are less than the observations from the other group. The p-value is then calculated based on the U-statistic using a distribution table or through computational methods.
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