I believe I may have found a typo on the table on the following slide – Are the numbers listed in the columns in the red box correct? Given mu_x and mu_y are zero, I assumed the columns of (x - mu_x) and (y - mu_y) should match the values listed in columns x and y:
You’re absolutely right to double-check that — and yes, your understanding is correct. Since both μₓ and μᵧ are zero, the values in the (x - μₓ) and (y - μᵧ) columns should indeed match the x and y values respectively. If the signs are flipped, that would indicate a mistake in the table. Though the final answers in the last column are still correct.
Also, just a heads-up: the course team has mentioned that the slides aren’t actively maintained, so occasional errors like this can slip through. It’s always great to approach the material with a critical eye, just like you did here.
