How to generate predicted value by beta/standardized regression coefficients, rather than unstandardized ones?

[Victor Smith]

Is there a simple way to generate predicted value by beta/standardized regression coefficients. For example, the code below only generates a predicted value "priceHat" by unstandardized coefficients.

webuse "auto.dta", clear

regress price mpg weight, beta

predict priceHat

[Maarten Buis]

Why would you want to do that? I suspect we are dealing with an xy problem (https://en.wikipedia.org/wiki/XY_problem), so that is why I am asking.

[Nick Cox]

As a variation on the theme by @Maarten Buis: You could get the same prediction with standardized coefficients, but then you would have to standardize your predictors too. There are not two different predictions.