Discuss WGU Foundations Of Programming (Python) (E010) Exam Topic 4 Question 9

SIMULATION

Write a complete function calculate_average(grades) that takes a list of grades and returns the average as a float.

For example, calculate_average([85, 92, 78]) should return 85.0.

def calculate_average(grades):

# TODO: Calculate and return the average grade as a float

pass

ASee the Step by Step Solution below in Explanation

Suggested Answer: A

==========

Step 1: The function receives one parameter named grades, which is a list of numbers.

Step 2: Use sum(grades) to add all the grades together.

Step 3: Use len(grades) to count how many grades are in the list.

Step 4: Divide the total by the number of grades.

Correct code:

def calculate_average(grades):

return sum(grades) / len(grades)

Example:

print(calculate_average([85, 92, 78]))

Output:

85.0

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18 comments · newest first

Francine 17 days ago

I’ll practice before the exam.

Latrice 23 days ago

Don’t forget to return a float.

Sherita 28 days ago

It’s basic math, you got this!

Francine 1 month ago

I hope I remember the syntax.

Latrice 1 month ago

Exactly! Use len() for count.

Sherita 1 month ago

Just sum the grades, then divide.

Francine 2 months ago

I’m a bit nervous.

Latrice 2 months ago

I feel confident about it.

Sherita 2 months ago

This question is straightforward.

Sol 2 months ago

Don't forget to convert to float before returning!

Ty 2 months ago

This seems too simple, there must be more to it.

Ashley 2 months ago

Wait, what if the list is empty?

Gilma 3 months ago

Totally agree, that's the basic formula!

Pura 3 months ago

Just sum the grades and divide by the count!

Sylvia 3 months ago

I feel like I should use the built-in sum function, but what if I forget how to calculate the length of the list?

Marcos 3 months ago

This seems similar to that practice question about calculating the mean. I hope I can remember the exact syntax!

Sabina 3 months ago

I'm not entirely sure how to handle an empty list. Do we just return 0.0 or something else?

Whitney 4 months ago

I think I remember we need to sum the grades and then divide by the number of grades, right?

WGU Foundations of Programming (Python) (E010) Exam - Topic 4 Question 9 Discussion