InverseNormal

public enum InverseNormal

Wald (inverse normal) distribution

  • Returns a SSProbDistParams struct containing mean, variance, kurtosis and skewness of the Wald (inverse normal) distribution.

    Throws

    SSSwiftyStatsError if a <= 0 || b <= 0

    Declaration

    Swift

    public static func para<FPT>(mean a: FPT, lambda b: FPT) throws -> SSProbDistParams<FPT> where FPT : Decodable, FPT : Encodable, FPT : SSFloatingPoint

    Parameters

    a

    mean
    b

    Scale

  • Returns the pdf of the Wald (inverse normal) distribution.

    Throws

    SSSwiftyStatsError if a <= 0 || b <= 0

    Declaration

    Swift

    public static func pdf<FPT>(x: FPT, mean a: FPT, lambda b: FPT) throws -> FPT where FPT : Decodable, FPT : Encodable, FPT : SSFloatingPoint

    Parameters

    x

    x
    a

    mean
    b

    Scale

  • Returns the cdf of the Wald (inverse normal) distribution.

    Throws

    SSSwiftyStatsError if a <= 0 || b <= 0

    Declaration

    Swift

    public static func cdf<FPT>(x: FPT, mean a: FPT, lambda b: FPT) throws -> FPT where FPT : Decodable, FPT : Encodable, FPT : SSFloatingPoint

    Parameters

    x

    x
    a

    mean
    b

    Scale

  • Returns the quantile of the Wald (inverse normal) distribution.

    Throws

    SSSwiftyStatsError if a <= 0 || b <= 0 || p < 0 || p > 0

    Declaration

    Swift

    public static func quantile<FPT>(p: FPT, mean a: FPT, lambda b: FPT) throws -> FPT where FPT : Decodable, FPT : Encodable, FPT : SSFloatingPoint

    Parameters

    p

    p
    a

    mean
    b

    Scale