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Write your own R-function for the linear regression using qr() function. You must not use solve()...

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Advance Math

Write your own R-function for the linear regression using qr()function. You must not use solve() function. The input of yourfunction would be a design matrix X and a response vector y and theoutput must contain

- least sqaure estimates and the corresponding stnadarderrors.

- residuals and MSE

- fitted values

- ANOVA table

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