9. Review


#1



Exercise Link:
https://www.codecademy.com/courses/python-intermediate-en-7mgOa/2/3?curriculum_id=4f89dab3d788890003000096#


Error Message:
"It looks like not all grades were printed!
Make sure you are printing ech one on their own line."
( ech is a small spelling error in the error message )


I expected it all to print to the console screen


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
    result = variance/len(scores)
    return result
print grades_variance(grades)

def grades_std_deviation(variance):
    return variance ** 0.5
    variance = grades_variance(grades)
    print grades_std_deviation(variance)
    
print print_grades(grades)
print grades_sum(grades)
print grades_average(grades)
print grades_std_deviation(variance)


#2

You are yet to print this too:

print grades_variance(grades)

#3

Ah yes, thank you got it now.


#4

You're welcome.

Have fun coding! :slight_smile:


#5

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