C1_W2_Linear_Regression --> predictions are correct, but still getting a function incorrect error... what might be wrong?

[mkor]

week #1
graded lab → C1_W2_Linear_Regression

all the outputs of the model are matching expected values (for predictions and other tests).

Yet, still getting these errors. What might be wrong?

“Code Cell UNQ_C1: Unexpected error (IndexError(‘index 3 is out of bounds for axis 0 with size 3’)) occurred during function check. We expected function compute_cost to return cost for perfect prediction must be 0. Please check that this function is defined properly.
Code Cell UNQ_C2: Unexpected error (IndexError(‘index 3 is out of bounds for axis 0 with size 3’)) occurred during function check. We expected function compute_gradient to return compute_gradient failed expected [2., [0]]. Please check that this function is defined properly.
If you see many functions being marked as incorrect, try to trace back your steps & identify if there is an incorrect function that is being used in other steps.
This dependency may be the cause of the errors.”

[TMosh]

Your code only works correctly for the data set and conditions in the notebook. The notebook’s tests are not conclusive - the grader uses different tests.

The first things to check are:

• does your code use fixed constants for sizes or shapes?
• does your code use any global variables?

[mkor]

figured out i was referring to the variables as x_train[*] and y_train[*] in these calculations vs x[] and y[]. Hence correct calcs but incorrect functions. Fixed it. Thanks for the help!