day1/exercise/markstats.py
author Puneeth Chaganti <punchagan@fossee.in>
Fri, 23 Oct 2009 12:27:12 +0530 (2009-10-23)
changeset 152 1ccdd4dc2d36
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Added data file pendulum.txt.
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import math
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f = open('/home/madhu/Desktop/marks.dat')
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subj_marks = [[]] * 5
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names = []
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for line in f:
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    fields = line.split(';')
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    names.append(fields[2])
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    for i in range(5):
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        subj_marks[i].append(int(fields[i+3]))
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for i in range(5):
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    avg_marks = float(sum(subj_marks[i])) / len(subj_marks[i])
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    student = names[subj_marks[i].index(max(subj_marks[i]))]
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    sigma = 0
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    for j in subj_marks[i]:
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        sigma += (j - avg_marks) ** 2
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    std_dev = math.sqrt(sigma)
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    print "Average marks for subject: %f is Standard Deviation is %f, Student with Highest Marks is %s" % (avg_marks, std_dev, student)
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