C1_W2_Linear Regression_compute the cost $J(w,b)$

Course Q&A Machine Learning Specialization Supervised ML: Regression and Classification
1

I am unable to solve the implementation problem and keep getting the following error code:

NameError Traceback (most recent call last)
in
3 initial_b = 1
4
----> 5 cost = compute_cost(x_train, y_train, initial_w, initial_b)
6 print(type(cost))
7 print(f’Cost at initial w: {cost:.3f}')

NameError: name ‘x_train’ is not defined

2

Have you run all the previous cells ?

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3

Yes. The code seems to be fine too. Can’t seem to find the root cause of the error.

4

Could you share a screenshot of the error once

5

I found the solution and got through the gradient descent lab. Thank you!

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