1 

     2 math_scores = []

     3 for record in open('sslc1.txt'):

     4     fields = record.split(';')

     5 

     6     math_score = fields[5].strip()

     7     if math_score != 'AA':

     8         math_scores.append(int(math_score))

     9     else:

    10         math_scores.append(0)

    11 

    12 

    13 # List method

    14 print "Mean: ", mean(math_scores)

    15 

    16 print "Median: ", median(math_scores)

    17 

    18 print "Standard Deviation: ", std(math_scores)

    19 

    20 # Array method

    21 

    22 math_scores = array(math_scores)

    23 

    24 print "Mean: ", mean(math_scores)

    25 

    26 print "Median: ", median(math_scores)

    27 

    28 print "Standard Deviation: ", std(math_scores)

    29