com.redhat.et.silex.statistics

CramersV

object CramersV

"Cramers' V is a measure of association between two nominal variables, giving a value between 0 and +1 (inclusive)."

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  6. def apply[T, U](values: Seq[(T, U)]): Double

    Calculate Cramer's V for a collection of values co-sampled from two variables.

    Calculate Cramer's V for a collection of values co-sampled from two variables.

    values

    Sequence of 2-tuples containing co-sampled values

    returns

    Cramer's V

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  18. def pValueEstimate[T, U](values: Seq[(T, U)], rounds: Int, seed: Long = Random.nextLong): Double

    Perform a permutation test to get a p-value indicating the probability of getting a higher assocation value.

    Perform a permutation test to get a p-value indicating the probability of getting a higher assocation value. Take the association level as the null hypothesis, reject if the p-value is less than your desired threshold.

    values

    Values co-sampled from variables 1 and 2

    rounds

    Number of permutations to generate

    seed

    (optional) Seed for the Random number generator used to generate permutations

    returns

    p-value giving the probability of getting a lower association value

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