Problem:
In Fall 2023, Harvard University released their latest Youth Poll where they asked US young adults about their political opinions, voting trends, and views on public service. The Fall 2023 Harvard Youth Poll surveyed 1864, 18 to 29 year old US residents from October 23 through November 6, 2023. Of the poll participants, 46% approve of President Biden's overall job performance. What type of variable it is?