A valid theory
A)extrapolates from the past behaviour of a variable to predict its future course.
B)generates a hypothesis that can predict future events.
C)appeals to the law of large numbers.
D)allows one to prove irrefutably one's hypothesis.
E)allows one to deduce a normative statement.

Question

Quizplus · Accepted Answer

A valid theory generates a hypothesis that can make testable predictions about future events. Option A describes extrapolation, which is a method, not a theory. Option C refers to a statistical concept, not a theory. Option D is not possible in science as it is impossible to prove something irrefutably. Option E refers to normative ethics, which is also not related to theory in general.

A Valid Theory