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# scipy.stats.pointbiserialr

`scipy.stats.``pointbiserialr`(x, y)

  Calculates a point biserial correlation coefficient and the associated p-value.

  The point biserial correlation is used to measure the relationship between a binary variable, x, and a continuous variable, y. Like other correlation coefficients, this one varies between -1 and +1 with 0 implying no correlation. Correlations of -1 or +1 imply a determinative relationship.

  Parameters: | x : array of bools y : array of floats
  Returns: | (point-biserial r, : 2-tailed p-value)

  References

  http://www.childrens-mercy.org/stats/definitions/biserial.htm

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