Variables measure

[Radhi]

Hello

I have two variables measured with the same measurement unity.(metric)

How to combine them in oder to have one variable.

[SteveDenham]

I think we need more information.  What is the purpose of combining the variables?  It could be as simple as calculating a sum or product--that is a combination.  It may be to find a principal component, sort of an underlying single variable that explains the bulk of the variation and covariance between the two variables.  Without knowing the purpose, it is very difficult to offer a suggestion.

Steve Denham