C1_W2_Linear_Regression AssertionError

Course Q&A Machine Learning Specialization Supervised ML: Regression and Classification
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I am getting Assertionerror can anyone explain what is this and why I am getting this error?

2

Hi @Tayyab_Ali1

The assertionError is raised because dj_db is expected to be -2, but it is not. So you need to check how dj_db is calculated. Use the hints

3

The issue was resolved.
Thanks for your reply :smiling_face:

4

START CODE HERE

for i in range(m):
    f_wb = w * x[i] + b
    dj_dw_i = (f_wb - y[i]) * x[i]
    dj_db_i = f_wb - y[i]
    dj_db += dj_db_i
    dj_dw += dj_dw_i
    dj_dw = dj_dw / m
    dj_db = dj_db / m

### END CODE HERE ###

This is how dj_db is calculated. I still get the assertion error. Why?
Can you be specific?

Thanks,

RG

5

Found out what the problem was from another posting. Got it. Solved.

Thanks

RG

6

Can you link the post?