Sunday, July 10, 2011

Boxplot

Let say we have a set of data and we would like to display the following statistics:
1) Mean
2) Mode/Modes
3) Median
4) First Quartile
5) Third Quartile
6) Maximum
7) Minimum

Item 3) - 7) can be viewed using boxplot (or sometimes also called as box-and-whisker plot). Observe the boxplot below, data are keyed into cells of A1 to A25. You may change the values in the stated cells and see the changes of the statistics and the boxplot as well. However, the position of the statistics won't change even if there is a change on the boxplot. Please take note the meaning of each vertical line of the boxplot before you start to change the values in the stated cells.



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