Question: 3. In the multiple regression model shown in the previous question, which one of the following statements is incorrect: (b) The sum of squared residuals

3. In the multiple regression model shown in the previous question,

3. In the multiple regression model shown in the previous question, which one of the following statements is incorrect: (b) The sum of squared residuals is the square of the length of the vector i (c) The residual vector is orthogonal to each of the columns of X (d) The square of the length of y is equal to the square of the length of y plus the square of the length of by the Pythagoras theorem 3. In the multiple regression model shown in the previous question, which one of the following statements is incorrect: (b) The sum of squared residuals is the square of the length of the vector i (c) The residual vector is orthogonal to each of the columns of X (d) The square of the length of y is equal to the square of the length of y plus the square of the length of by the Pythagoras theorem

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