Add some useful stats to histogram.

1 files changed, 9 insertions, 2 deletions

diff --git a/histogram.py b/histogram.py
index 2657c0b..9c07df9 100644
--- a/histogram.py
+++ b/histogram.py
@@ -40,7 +40,7 @@ class SimpleHistogram(Generic[T]):
                 raise Exception("Buckets overlap?!")
             self.buckets[start_end] = 0
         self.sigma: float = 0.0
-        self.median: RunningMedian = RunningMedian()
+        self.stats: RunningMedian = RunningMedian()
         self.maximum: Optional[T] = None
         self.minimum: Optional[T] = None
         self.count: Count = 0
@@ -74,7 +74,7 @@ class SimpleHistogram(Generic[T]):
         self.count += 1
         self.buckets[bucket] += 1
         self.sigma += item
-        self.median.add_number(item)
+        self.stats.add_number(item)
         if self.maximum is None or item > self.maximum:
             self.maximum = item
         if self.minimum is None or item < self.minimum:
@@ -142,4 +142,11 @@ class SimpleHistogram(Generic[T]):
         txt += sigma_label.rjust(details.max_label_width)
         txt += ' ' * (bar_width - 2)
         txt += f'Σ=(100.00% n={self.count})\n'
+        txt += ' ' * (bar_width + details.max_label_width - 2)
+        txt += f'mean(μ)={self.stats.get_mean():.3f}\n'
+        txt += ' ' * (bar_width + details.max_label_width - 2)
+        txt += f'p50(η)={self.stats.get_median():.3f}\n'
+        txt += ' ' * (bar_width + details.max_label_width - 2)
+        txt += f'stdev(σ)={self.stats.get_stdev():.3f}\n'
+        txt += '\n'
         return txt