3 1 -1 = [m Let M = be a 4 x 3 matrix. Let = be a vector in R4. 1 1 -2 1 -3 1 1. Determine the rank of M and the dimension of Nul(M). 2. Explain why {ñ1, m2} is an orthogonal basis for Col(M). 3. Compute the orthogonal projection of j onto Col(M) (use the orthogonal basis from question 2.).

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.