The dataset is D={(2,1),(3,2),(3,3),(4,2)}. If we want to use PCA to project the data onto a 1-dimensional space, what is the basis vector (principal component) of the new feature space? [21,21][21,21][1,1][1,1] The centering matrix is H=INN11N1NT where IN is an identity matrix and 1N=[1,1,,1]T. Which of the following statements is wrong? H=HTHn=Hmax(H)