Difference in average


#1




The expected average is 83.666667 and my code gives the answer as 84.08333


lloyd = {
    "name": "Lloyd",
    "homework": [90.0, 97.0, 75.0, 92.0],
    "quizzes": [88.0, 40.0, 94.0],
    "tests": [75.0, 90.0]
}
alice = {
    "name": "Alice",
    "homework": [100.0, 92.0, 98.0, 100.0],
    "quizzes": [82.0, 83.0, 91.0],
    "tests": [89.0, 97.0]
}
tyler = {
    "name": "Tyler",
    "homework": [0.0, 87.0, 75.0, 22.0],
    "quizzes": [0.0, 75.0, 78.0],
    "tests": [100.0, 100.0]
}

# Add your function below!
def average(numbers):
    total = sum(numbers)
    total = float(total)
    total = total/len(numbers)
    return total
    
def get_average(dictionary):
    homework= average(dictionary["homework"])
    quizzes= average(dictionary["quizzes"])
    tests= average(dictionary["tests"])
    return 0.1 * homework + 0.3 * quizzes + 0.6 * tests
    
def get_letter_grade(score):
    if score >= 90:
        return "A"
    elif score >=80:
        return "B"
    elif score >=70:
        return "C"
    elif score >=60:
        return "D"
    else:
        return "F"
        

get_letter_grade(get_average(lloyd))        

def get_class_average(students):
    results=[]
    for student in students:
        results.append(get_average(student))
        
    return average(results)    
    
print get_class_average([lloyd,alice,lloyd])
print get_letter_grade(get_class_average([lloyd,alice,lloyd]))


#2

Average of what?


#3

The class average.
The result obtained from the execution of the print function on the second to last line


#4

The class average of which students?


#5

You've called Lloyd twice!


#6

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