diff --git a/src/quantile.rs b/src/quantile.rs
index cb99440..505e2df 100644
--- a/src/quantile.rs
+++ b/src/quantile.rs
@@ -1,3 +1,4 @@
+use core;
 use core::cmp::min;
 
 use conv::{ApproxFrom, ConvAsUtil, ValueFrom};
@@ -163,6 +164,13 @@ impl Quantile {
     }
 }
 
+impl core::default::Default for Quantile {
+    /// Create a new median estimator.
+    fn default() -> Quantile {
+        Quantile::new(0.5)
+    }
+}
+
 #[test]
 fn reference() {
     let observations = [