Module: Distribution::F::GSL_
- Defined in:
- lib/distribution/f/gsl.rb
Class Method Summary collapse
-
.cdf(x, k1, k2) ⇒ Object
F cumulative distribution function (cdf).
-
.p_value(pr, k1, k2) ⇒ Object
Return the P-value of the corresponding integral with k degrees of freedom.
- .pdf(x, k1, k2) ⇒ Object
Class Method Details
.cdf(x, k1, k2) ⇒ Object
F cumulative distribution function (cdf).
Returns the integral of F-distribution with k1 and k2 degrees of freedom over [0, x].
Distribution::F.cdf(20,3,2)
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# File 'lib/distribution/f/gsl.rb', line 22 def cdf(x, k1, k2) GSL::Cdf.fdist_P(x.to_f.to_f,k1,k2) end |
.p_value(pr, k1, k2) ⇒ Object
Return the P-value of the corresponding integral with k degrees of freedom
Distribution::F.p_value(0.95,1,2)
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# File 'lib/distribution/f/gsl.rb', line 12 def p_value(pr,k1,k2) GSL::Cdf.fdist_Pinv(pr.to_f,k1,k2) end |
.pdf(x, k1, k2) ⇒ Object
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# File 'lib/distribution/f/gsl.rb', line 5 def pdf(x,k1,k2) GSL::Ran.fdist_pdf(x.to_f,k1,k2) end |