Styles AnswerPoints Data Find the mean of x Find the mean of y Find the variance

Question

Styles AnswerPoints Data Find the mean of x Find the mean of y Find the variance of x 2 85 Find the variance of y Find the covwy Find the OLS estimate of BO Find the OLS estimate of 81 Find the anticipated value of Y X-3 Find the residual of observation 2 Find the squared residual of observation 3 Find the mean of x Find the mean of y 1pt Find the variance of x Find the variance of y Find the sovls Find the OLS estimate of B0 Find the OLS estimate of B1 Find the anticipated vak" of YXc3 Find the residual of observation 2 Find the squared residual of observation 3 1pt You have estimated 2.5, and have calculated an RSS of 20 and a o-10. You have 15 data points What is the SE of 17 (2 ) Huw much wil change Xincnnes by 1?(2pts) How much will y change if X increases by 23? (2 pts

Explanation / Answer

mean = sum of observations / total number of observations

variance = sum of square of deviations from mean / total number of obs

Cov (x, y) = [sum (xi-mean of x) (yi-mean of y)] / no. of obs

=

-1.8125

Second data:

covariance =

Obs x y 1 6 3 2 8 5 3 4 6 4 3 7 mean 5.25 5.25 variance 4.916667 2.916667

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