Suppose the least squares regression equation is Y' = 1202 + 1,133X. When X=3, what does Y' equal?
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A. B. C. D. E.C
Y' = 1202 + 1133(3) = 4601.
To determine the value of Y' (predicted Y) when X = 3 using the given least squares regression equation, we substitute the value of X into the equation.
The least squares regression equation is expressed as Y' = 1202 + 1,133X, where Y' represents the predicted value of Y, and X is the independent variable.
To find Y' when X = 3, we substitute X = 3 into the equation:
Y' = 1202 + 1,133(3)
Now we perform the calculation:
Y' = 1202 + 3,399
Y' = 4,601
Therefore, when X = 3, the predicted value of Y (Y') is 4,601.
The correct answer is C. 4,601.