ML01 ex05 (z_score): incoherent example

[mli42]

• Day: 06
• Exercise: 05

There are 3 minors issues:

Turn in filename

The subject header says: Files to turn in : z_score.py

But the instructions says: In the zscore.py file, write the zscore function (without the underscore)

Undefined numpy

In the examples, X is defined while calling numpy, but Y is defined while calling np

Mismatching Y shape

Still in the examples, Y is declared as follows:
Y = np.array([2, 14, -13, 5, 12, 4, -19]).reshape((-1, 1))
Thus its shape is (2, 1) and not (2, ) as X.

The problem is that the expected value is:
array([ 0.11267619, 1.16432067, -1.20187941, 0.37558731, 0.98904659, 0.28795027, -1.72770165]) which shape is (7, ), IMO it should be (7, 1) so the zscore function can copy the incomming array's shape.

Fixed on:

• Github
• Gitlab