Problem 44960. Rescale Scores

It appears the last column of the output from the problem statement should be 3.5; 0.0; 2.0 instead of 3.5; 0.0; 3.0, but the first test suite does have it correct.

yes true, thank you

Thank you! Modified the problem statement.

Why doesn't it work?
function X = rescale_scores(X)
X = [X(1:end,1:end-1) (X(1:end,end).-60)./4]
end

A little bit of math work will make your program much simpler. Grade 60-100 for GPA 0 - 4, this is a straight line! The equation for this straight line is GPA = 0.1*(grade-60). Don't forget to take care of negative GPAs.

X(:,end)=mean(rescale(X(:,end-1),-6,4,'InputMin',0,'InputMax',100),2);

Don't forget the negative numbers.
Score GPA
90 - 100 3 - 4
80 - 90 2 - 3
70 - 80 1 - 2
60 - 70 0 - 1
50 - 60 -1 - 0
40 - 50 -2 - -1
30 - 40 -3 - -2
20 - 30 -4 - -3
10 - 20 -5 - -4
0 - 10 -6 - -5

I am getting confused. IIs there a capital and small "x" in use. Getting errors.

Below 60 GPA=0, so why there could be any negative value?

"Assume that no student in this class has scored below 60." - not true in the test cases!

I am with jklebes

"Assume that no student in this class has scored below 60." - not true in the test cases!

The test suite has been corrected.

The problem is poorly posed. Per the instructions, a 70 or a 71 would result in a GPA of 1.0. A 80 or 81 would be a 2.0. 90 or 91 is a 3.0.
Thankfully the example shows the correct expected output.

Test 3 does not make any sense!