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Consider the Data Set


β\beta

Question 19

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Consider the data set

Consider the data set Calculate the (a) sample means. (b) S<sub>xx</sub> , S<sub>xy</sub> S<sub>yy</sub>. (c) Calculate the least squares estimates \beta <sub>1</sub> and \beta <sub>0</sub>. (d) Estimate the error variance. (e) Determine the proportion of variation in y explained by x.

Calculate the
(a) sample means.
(b) Sxx , Sxy Syy.
(c) Calculate the least squares estimates β\beta 1 and β\beta 0.
(d) Estimate the error variance.
(e) Determine the proportion of variation in y explained by x.

Correct Answer:

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(a) 3 and 4
(b) Sxx

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