Is it possible to express
has a higher variance
in the sentence
Dataset A has a higher variance than dataset B
as an adjective? Would
Dataset A is more variable than dataset B
be the right choice?
The common way of saying this is to use the word variant:
1 : manifesting variety, deviation, or disagreement
2 : varying usually slightly from the standard form
// variant readings
// variant spellings
So, in your case, you would say:
Dataset A is more variant than dataset B.
Generally, a comparison needs to be made to something else. So, in this case, dataset A is more variant than dataset B when it comes to some statistical norm.
For a more explicit statement, you could say something like this:
In comparison to the norm, dataset A is more variant than dataset B.
If you’re talking about the elements within a dataset, then you are comparing them to each other. In that case, you could use variance if you rephrased your sentence slightly:
The elements of dataset A show more variance than those of dataset B.