Given are five observations collected in a regression study on two variables. xi 2 6 9 13 20 yi 7 19 8 27 23 (b) Develop the estimated regression equation for these data. ŷ = (c) Use the estimated regression equation to predict the value of y when x = 20.
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Step 1
The formula for the slope (b1) is: b1 = [n(Σxy) - (Σx)(Σy)] / [n(Σx^2) - (Σx)^2] And the formula for the y-intercept (b0) is: b0 = (Σy - b1(Σx)) / n Where: n = number of observations Σxy = sum of the product of x and y Σx = sum of x Σy = sum of y Σx^2 = sum Show more…
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