Directional: conc.test – R documentation

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conc.test

A test for testing the equality of the concentration parameter among g samples, where g >= 2 for ciruclar data

A test for testing the equality of the concentration parameter among g samples, where g >= 2 for ciruclar data.

conc.test(u, ina, rads = FALSE)

`u`	A numeric vector containing the values of all samples.
`ina`	A numerical variable or factor indicating the groups of each value.
`rads`	If the data are in radians this should be TRUE and FALSE otherwise.

This test works for circular data.

A list including:

`mess`	A message informing the use of the test statistic used.
`res`	A numeric vector containing the value of the test statistic and its associated p-value.

Michail Tsagris

R implementation and documentation: Michail Tsagris mtsagris@uoc.gr and Giorgos Athineou <gioathineou@gmail.com>

Mardia, K. V. and Jupp, P. E. (2000). Directional statistics. Chicester: John Wiley & Sons.

x <- rvonmises(100, 2.4, 15)
ina <- rep(1:4,each = 25)
conc.test(x, ina, rads = TRUE)

A Collection of R Functions for Directional Data Analysis

v4.9

GPL-2

Authors

Michail Tsagris, Giorgos Athineou, Anamul Sajib, Eli Amson, Micah J. Waldstein

Initial release

2021-03-26