Lecture 4 annotated

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Matrix Formulation of Linear Models Prof. Bruce Dunham Department of Statistics STAT 306: Lecture 7 Lecture 4 Slides 1 of 51
Example Suppose within a population we are interested in how the amount of money ( Y , in $000) in an individual's bank account varies with the individual's age ( x , in years . A random sample of nine individuals is taken from the population and their x , y values recorded x - c ( 82 , 45 , 71 , 22 , 29 , 9 , 12 , 18 , 24 ) y - c ( 71 , 54 , 43 , 45 , 21 , 11 , 30 , 45 , 10 ) Define the following matrices: Lecture 4 Slides 2 of 51
y 71 54 43 45 21 11 30 45 10 , X 1 82 1 45 1 71 1 22 1 29 1 9 1 12 1 18 1 24 , 0 1 , 1 2 9 . Lecture 4 Slides 3 of 51
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