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B3. (a) The table below contains the exam marks of 5 students in 3 subjects. Name two potential methods to reduce the dimension of the

B3. (a) The table below contains the exam marks of 5 students in 3 subjects. Name two potential methods to reduce the dimension of the given 3-dimensional data. Subjects student 1 student 2 student 3 student 4 student 5 Maths 5 5 4 3 3 English 4 5 4 4 3 Art 5 3 4 5 3 (b) Find the first two principal components of the 3-dimensional data in the table above

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