--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/day1/exercise/markstats.py	Thu Oct 08 18:59:47 2009 +0530
@@ -0,0 +1,22 @@
+import math
+
+f = open('/home/madhu/Desktop/marks.dat')
+    
+subj_marks = [[]] * 5
+names = []
+for line in f:
+    fields = line.split(';')
+    names.append(fields[2])
+    for i in range(5):
+        subj_marks[i].append(int(fields[i+3]))
+
+for i in range(5):
+    avg_marks = float(sum(subj_marks[i])) / len(subj_marks[i])
+    student = names[subj_marks[i].index(max(subj_marks[i]))]
+    sigma = 0
+    for j in subj_marks[i]:
+        sigma += (j - avg_marks) ** 2
+
+    std_dev = math.sqrt(sigma)
+    print "Average marks for subject: %f is Standard Deviation is %f, Student with Highest Marks is %s" % (avg_marks, std_dev, student)
+