Ask for help 9/9


#1

grades = [100, 100, 90, 40, 80, 100, 85, 70, 90, 65, 90, 85, 50.5]

def print_grades(grades):
for grade in grades:
print grade

def grades_sum(grades):
total = 0
for grade in grades:
total += grade
return total

def grades_average(grades):
sum_of_grades = grades_sum(grades)
average = sum_of_grades / float(len(grades))
return average

def grades_variance(scores):
average=grades_average(scores)
variance=0
for score in scores:
variance=(average-score)**2/len(grades)
return variance

def grades_std_deviation(variance):
return variance**0.5
variance=grades_variance(grades)

print grades_std_deviation(variance)
print grades_sum(grades)
print grades_average(grades)
print print_grades(grades)
print gardes_variance(scores)

Traceback (most recent call last):
File "python", line 35, in
NameError: name 'gardes_variance' is not defined


#2

It tells you whats wrong there...

you mis-spelt grades