correlation_plot

normtest.filliben.correlation_plot(axes, x_data)

This function creates an axis with the Filliben test [1] correlation graph.

Parameters:

axesmatplotlib.axes.SubplotBase

The axis of the graph;

x_datanumpy array

One dimension numpy array with at least 4 observations.

Returns:

axesmatplotlib.axes.SubplotBase

The axis of the graph;

See also

fi_test

dist_plot

References

[1]

FILLIBEN, J. J. The Probability Plot Correlation Coefficient Test for Normality. Technometrics, v. 17, n. 1, p. 111-117, 1975.

Examples

>>> from normtest import filliben
>>> import matplotlib.pyplot as plt
>>> import numpy as np
>>> x_data = np.array([6, 1, -4, 8, -2, 5, 0])
>>> fig, ax = plt.subplots()
>>> ax = filliben.correlation_plot(ax, x_data)
>>> # plt.savefig("correlation_plot.png")
>>> plt.show()