Can dataset with numeric (cardinal) dependent variable be unbalanced?

can a dataset be unbalanced if the dependent variable is numerical (cardinal scale)? Or does the question whether a dataset is (un)balanced only matter for datasets with a categorical dependent variable?

I have a dataset with a metric dependent variable with about 1230 observations, and about 200 of them have an extremely low dependent variable value, and about 650 an extremely high value. The rest of the observations is distributed pretty equally in between. I'm wondering whether this dataset must be considered as unbalanced.

Thanks for your help!