(Choose 1 answer)
A. (1)
B. (II)
C. (III)
D. (IV)
Suppose you have m=23 training examples with n=5 features (excluding the additional all-ones feature for the intercept term, which you should add). The normal equation is \theta=(X^{T}X)^{-1}X^{T}y For the given values of m and n, what are the dimensions of @, X, and y in this equation?
(1) X~i<23\times6 y is 23 x 6,0 is 6 x6
(II) X is 23 x 5, y is 23 × 1,0 a=5\times5
(III) X is 23 x 6, y is 23 x 1,0 is 6 x 1
(IV) X~i<23\times5 y is 23 × 1,0 is 5 x1
Eatt 8
