Module: Distribution::ChiSquare::Statistics2_
- Defined in:
- lib/distribution/chisquare/statistics2.rb
Class Method Summary collapse
-
.cdf(x, k) ⇒ Object
Chi-square cumulative distribution function (cdf).
-
.p_value(pr, k) ⇒ Object
Return the P-value of the corresponding integral with k degrees of freedom.
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/statistics2.rb', line 15 def cdf(x, k) Statistics2.chi2dist(k.to_i,x) 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/statistics2.rb', line 7 def p_value(pr,k) Statistics2.pchi2X_(k.to_i, pr) end |