Merge pull request #215 from nokfi/ticket1651

DOC: clarified some documentation related to ticket 1651

scipy/stats/distributions.py

@@ -227,6 +227,8 @@ def instancemethod(func, obj, cls):
 >>> x = np.linspace(0, np.minimum(rv.dist.b, 3))
 >>> h = plt.plot(x, rv.pdf(x))
 
+Here, ``rv.dist.b`` is the right endpoint of the support of ``rv.dist``.
+
 Check accuracy of cdf and ppf
 
 >>> prb = %(name)s.cdf(x, %(shapes)s)
@@ -319,6 +321,8 @@ def instancemethod(func, obj, cls):
 >>> x = np.arange(0, np.minimum(rv.dist.b, 3))
 >>> h = plt.vlines(x, 0, rv.pmf(x), lw=2)
 
+Here, ``rv.dist.b`` is the right endpoint of the support of ``rv.dist``.
+
 Check accuracy of cdf and ppf
 
 >>> prb = %(name)s.cdf(x, %(shapes)s)
@@ -5644,6 +5648,8 @@ def _pmf(self, k, mu):
     >>> x = np.arange(0, np.min(rv.dist.b, 3)+1)
     >>> h = plt.plot(x, rv.pmf(x))
 
+    Here, ``rv.dist.b`` is the right endpoint of the support of ``rv.dist``.
+
     Check accuracy of cdf and ppf:
 
     >>> prb = generic.cdf(x, <shape(s)>)