Question

This figure shows an estimated linear equation with 95% prediction intervals. Assume that the units of X and Y are dollars.
(a) Visually estimate the intercept b0 and the slope b1.
(b) Is se (b1) less than 1, about 1, or more than 1?
(c) Is r2 approximately 0.3, 0.5, or 0.8?
(d) Estimate se, the standard deviation of the residuals.


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  • CreatedJuly 14, 2015
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