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Suppose I have the linear regression equation:

Y = B0 + B1(x)

How do I find the estimated effect on mean Y of an additional 50 to x?

I believe this is the multiplicative effect.

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I think that this is obvious: if you have an equation y = b0 + b1x and x increased by 50, then y' = b0 + b1(x + 50).

So y' - y = b1 * 50

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