1 files changed, 19 insertions, 0 deletions
diff --git a/progs/a116.py b/progs/a116.py
new file mode 100644
index 0000000..f9da081
--- /dev/null
+++ b/progs/a116.py
@@ -0,0 +1,19 @@
+import math
+import sys
+def sd_calc(data):
+    n = len(data)
+    if n <= 1:
+        return 0.0
+    mean, sd = avg_calc(data), 0.0
+    for el in data:
+        sd += (float(el) - mean)**2
+    sd = math.sqrt(sd / float(n-1))
+    return sd
+def avg_calc(ls):
+    n, mean = len(ls), 0.0
+    if n <= 1:
+        return ls[0]
+    for el in ls:
+        mean = mean + float(el)
+    mean = mean / float(n)
+    return mean
+\ No newline at end of file