Question: Consider the matrix -1 I +1 -1 X = and the vector y= 1 -1 +1 1 +1 +1 a. Find X'X, (X'X) , X'y,

Consider the matrix -1 I +1 -1 X = and the vector y= 1 -1 +1 1 +1 +1 a. Find X'X, (X'X) , X'y, and (X'X) X'y. b. Describe the structure of X'X and (X'X)

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