50% represents maximum dissension.
How many other questions were there? How did they coincide with the presented questions? What is the expected distribution if answers were assigned randomly?
2) A question that deals with global or national finance often can't be accurately stated in a single sentence. I look at, say, the minimum wage, or the sports franchise question, and I think, "It depends."
3) There's an assumption in the questions that contain "should". That assumption is that economists all share the same goals. They don't. The ones who do may agree about the methods to achieve it.