Who Called My Phone?

wat is the answer…jus couldn’t figure it out…

A telemarketing firm in LA uses a device that dials residential telephone numbers in that city at random. Of the first 100 numbers dialed, 48% are unlisted. This is not surprising because 52% of all LA residential phones are unlisted.
Identify each of 100, 48%, and 52% as being parameters or statistics.

100 = parameter
48% and 52% = statistics