Percent Effect of variables in equation

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The discussion focuses on determining the percentage or weight of each variable in the equation BBC = (X+1)*(a*b*c)/(U*V). To achieve this, participants recommend taking the partial derivatives of each variable to assess their individual effects on the value of BBC. Additionally, if variables are correlated, correlation coefficients must be considered, complicating the analysis. It is also noted that when variables exhibit Gaussian uncertainty distributions, the total variance of BBC can be calculated by summing the terms in quadrature, emphasizing that the weights depend on the specific values at which the function is evaluated.

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Anyidea on how to obtain the percentage or weight of each variable in an equation?

for example:

BBC = (X+1)*(a*b*c)/(U*V)

what would each variable X,a,b,c,U,V weight in percentage in equation BBC?

Appreciate it.
 
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Take the partial derivatives of each variable to get its effect on the value of BBC. If any of the variables are correlated, then it is a little more complicated; you will need correlation coefficients.
If all of the variables have gaussian uncertainty distributions, then all the terms should be summed in quadrature to get the total variance on BBC.
 
Last edited:
Maybe one should note that the weight depends on the values at which the function is evaluated.
 
Last edited:

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