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Oriana is a tool for calculating statistics for circular or radial data (angles or directions measured in degrees, time of day, day of week, month of year, etc.). It can be used for orientation data (direction taken from a point), for describing and comparing species temporal distributions and ranges, and other types of data that are not directly handled in most statistics packages. It provides basic statistics such as mean vector and confidence limits, single sample distribution tests (Rayleigh's), and also pairwise and multisample tests such as Watson-Williams F-Test and chi-squared test, and correlations. Oriana can graph your circular data in a variety of ways, including rose diagrams, circular histograms or wind roses.

Technical Expertise Required: 
No programming