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Unformatted text preview: weights (in the unit of kg) of the same people. Let x i be height, and y i be weight, for i = 1 ,..., 10. 170 76 165 63 186 83 142 39 176 62 183 81 181 82 179 82 171 85 180 77 (1) Fit the simplest regression y i = βx i + ± i by estimating β by least squares. (2) Fit the simple regression y i = β + β 1 x i + ± i by estimating β and β 1 by least squares. (3) Using the learned simple regression, predict the weight of a person whose height is 175. (4) Draw (with your hands, not computers or calculators) the scatter plot and the ﬁtted regression lines of the simplest regression and simple regression. (5) Calculate the covariance and correlation between the two variables. What are the units of the covariance and correlation? 1...
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This note was uploaded on 03/30/2011 for the course STAT 100B taught by Professor Wu during the Spring '11 term at UCLA.
 Spring '11
 Wu
 Least Squares

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