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:: Home ::Six Sigma ::SIX SIGMA GLOSSARY: Mood's Median Test :: CURRENT STUDENTS LOGIN

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Mood's Median Test (Sign Scores Test)
 

The Mood's Median Test (also known as the Sign Scores Test) is a nonparametric equivalent of ANOVA. It is an alternative to the Kruskal-Wallis test. The hypothesis is:

H0 the samples are all drawn from populations with equal medians
H1 the median of at least one of the samples populations is different

The test involves:

  • find the median of the combined data set
  • find the number of values in each sample greater than the median and form a contingency table:
 
A
B
C
Total
Greater than the median
       
Less than or equal to the median
       
Total
       
  • find the expected value for each cell:

Moods Median Expected Value

  • find the chi-square value from:

Chi Square

 

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