Which variables do not have zero value? Also give an example of multiple power regression.
Could you please elaborate more? What so you mean and why is it important.
There is no information in the question and its not a valid question.
PS: If it is a variable, it can have any value possible and not just "zero", that is the definition of a variable.
There are a couple of random variables that have support on (0, +Inf). Examples are variables with a log-normal and a gamma distribution. The support of a random variable with Pareto distribution is [scale, +Inf), so it does not contain zero if scale > 0. Another example is the uniform distribution with min,max > 0 or min,max < 0 and other distributions with at least one bound that can be shifted to not include 0.
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