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Exam Statistics
The sum of scores
Now that we have a function to print the grades, let’s create another function to compute the sum of all of the test grades.
This will be super-helpful when we need to compute the average score.
I know what you’re thinking, “let’s just use the built-in sum
function!” The built-in function would work beautifully, but it would be too easy.
Computing the sum manually involves computing a rolling sum. As you loop through the list, add the current grade to a variable that keeps track of the total, let’s call that variable total
.
Instructions
1.
On line 3, define a function, grades_sum
, that does the following:
- Takes in a list of scores,
scores
- Computes the sum of the scores
- Returns the computed sum.
Call the newly created grades_sum
function with the list of grades
and print
the result.