Module: Distribution::ChiSquare::GSL_

Defined in:
lib/distribution/chisquare/gsl.rb

Class Method Summary collapse

Class Method Details

.cdf(x, k) ⇒ Object

Chi-square cumulative distribution function (cdf).

Returns the integral of Chi-squared distribution with k degrees of freedom over [0, x]



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# File 'lib/distribution/chisquare/gsl.rb', line 21

def cdf(x, k)
  GSL::Cdf::chisq_P(x.to_f,k.to_i)
end

.p_value(pr, k) ⇒ Object

Return the P-value of the corresponding integral with k degrees of freedom



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# File 'lib/distribution/chisquare/gsl.rb', line 13

def p_value(pr,k)
  GSL::Cdf::chisq_Pinv(pr.to_f,k.to_i)
end

.pdf(x, k) ⇒ Object 



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# File 'lib/distribution/chisquare/gsl.rb', line 8

def pdf(x,k)
  GSL::Ran::chisq_pdf(x.to_f,k.to_i)
end

.rng(k, seed = nil) ⇒ Object 



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# File 'lib/distribution/chisquare/gsl.rb', line 5

def rng(k,seed=nil)
  
end