Median

Calculates the median of the column. The median is the data point in the center of a ranked data set.

Median of {1, 2, 4, 8, 9} is 4.

If there is no middle value the Mean of the two middle value is calculated.

Median of {1, 2, 8, 9} is 5.

The Median is often used when comparing non normally distributed data.

Example

The Median of the data-set A is 0.8974, this is visible in row Median of the result array.

Data file

Statistics with Median

Difference Mean or Median and a hypothetic value

• Normal Distribution one sample t-test
• Not Normal Distribution 1 sample Wilcoxon median test

Difference between 2 Means or Medians

• Normal Distribution 2 sample t-test
• Not Normal Distribution 1 sample Wilcoxon median test

Difference between multiple Means or Medians

• Normal Distribution One way Anova
• Not Normal Distribution Kruskal-Wallis Test

External links

• http://en.wikipedia.org/wiki/Median
  

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