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The CANSSI logo is an example of a polar-area diagram or rose chart for plotting cyclic phenomena. Florence Nightingale used them to display mortality statistics as early as 1858. In her charts, the sectors have equal apex angles, corresponding to time periods, and the colored areas, which are measured from the centre, are proportional to counts in three categories. In the CANSSI logo, the centre represents the unity at the core of the statistical sciences, and the sectors depict the context of society and collaborating disciplines.


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