hw_03_sol

# hw_03_sol - Homework 3 Solutions Covers Chapters 5 and 6...

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Homework 3 - Solutions Covers Chapters 5 and 6 Matrix Methods 1. Using the data for Homework 1 and 2, write in proper matrix form, the matrices for Y , and X . = 4 1 5 1 9 1 5 1 7 1 8 1 6 1 6 1 3 1 4 1 6 1 7 1 5 1 5 1 4 1 3 1 1 1 1 1 2 1 2 1 X 2. Using matrix methods show your work in finding the estimates for B . ( 29 Y X X X b ' ' 1 - = where = = 527 93 93 20 ' 2 i i i X X X n X X and = 584 108 ' Y X ( 29 - - = - - - = = - - 20 93 93 527 1891 1 20 93 93 527 ) 93 * 93 ( ) 527 * 20 ( 1 527 93 93 20 ' 1 1 X X - - = 1891 / 20 1891 / 93 1891 / 93 1891 / 527 then, 1 = 7 9 6 4 8 9 6 7 2 5 8 7 6 7 4 5 3 1 1 3 Y

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( 29 + - - + = - - = - 1891 584 * 20 1891 108 * 93 1891 584 * 93 1891 108 * 527 584 108 1891 / 20 1891 / 93 1891 / 93 1891 / 527 ' ' 1 Y X X X = = + -
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hw_03_sol - Homework 3 Solutions Covers Chapters 5 and 6...

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