From 53f6aafe973a2adb319d40cac7249bcdc3f3ea01 Mon Sep 17 00:00:00 2001
From: KimTaeeun <teun1215@ajou.ac.kr>
Date: Tue, 4 Dec 2018 13:08:44 +0900
Subject: [PATCH] Upload New File

---
 ...21\354\262\251\355\225\250\354\210\230.py" | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 "\354\244\221\354\262\251\355\225\250\354\210\230.py"

diff --git "a/\354\244\221\354\262\251\355\225\250\354\210\230.py" "b/\354\244\221\354\262\251\355\225\250\354\210\230.py"
new file mode 100644
index 0000000..03c7d7f
--- /dev/null
+++ "b/\354\244\221\354\262\251\355\225\250\354\210\230.py"
@@ -0,0 +1,21 @@
+import math
+def stddev(*args):
+    def mean():
+        return sum(args) / len(args)
+    def variance(m):
+        total = 0
+        for arg in args:
+            total += (arg - m) ** 2
+        return total / (len(args)-1)
+    v = variance(mean())
+    return math.sqrt(v)
+
+print(stddev(2.3, 1.7, 1.4, 0.7, 1.9))
+print(stddev(1,2,3))
+
+# print(stddev(1))
+# ZeroDivisionError
+
+# print(mean(1,2))
+# NotDefined
+
-- 
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