Changeset 3441 for trunk/yat/statistics/Fisher.h

Timestamp:

Nov 23, 2015, 9:20:08 AM (7 years ago)

Author:

Peter

Message:

closes #841

File:

• trunk/yat/statistics/Fisher.h (modified) (2 diffs)

trunk/yat/statistics/Fisher.h

@@ -148 +148 @@
        hypergeometric distribution
        \f$ \sum_k P(k) \f$ where summation runs over \a k such that
-       \f$ |k-<a>| \ge |a-<a>| \f$.
+       \f$ P(k) \le P(a) \f$.
 
        \return two-sided p-value
@@ -195 +195 @@
     // two-sided
     double p_value_approximative(void) const;
-    //two-sided
+    // two-sided
     double p_value_exact(void) const;
+    // calculate two-sided p-value to get k (or fewer) wins when
+    // drawing t samples out of of a population of n1 wins and n2 losses
+    double p_value_exact(unsigned int k, unsigned int n1, unsigned int n2,
+                         unsigned int t) const;
+
+    double lower_tail(unsigned int k, unsigned int n1, unsigned int n2,
+                      unsigned int t) const;
+
+    // return P(X=k+1) / P(X=k)
+    double hypergeometric_ratio(unsigned int k, unsigned int n1,
+                                unsigned int n2, unsigned int t) const;
+    double choose_ratio(unsigned int n, unsigned int k) const;
+
+    double p_left_exact(void) const;
+    double p_right_exact(void) const;
 
     double yates(unsigned int o, double e) const;