2. What is the central question Popper poses for theories?
(a) How logical they are.
(b) Whether they yield significant results.
(c) How they stand up to other tests.
(d) If they have been tested more than once.

3. What is Popper's goal in researching a theory?
(a) To determine its value.
(b) To determine if it is probable.
(c) To determine if it is corroborated.
(d) To determine if it is a singular statement.

4. When comparing empirical content, what two factors must the relationship points fall between?
(a) Logical and metaphysical.
(b) Contradiction and metaphysical.
(c) Tautology and metaphysical.
(d) Contradiction and tautology.

5. What is the most significant factor when selecting a theory?
(a) Its universality.
(b) The understandability.
(c) Previous research.
(d) The degree of testability.

6. What is complimentary to the degree of falsifiability?
(a) Justifications.
(b) Probability.
(c) Empty classes.
(d) Logic.

7. According to von Mises, what occurs to the frequencies of events when event sequences become longer?
(a) They develop an inverse relationship.
(b) They become equal.
(c) They decrease at the same rate.
(d) They increase at the same rate.

8. What leads to scientific advances?
(a) Proving theories are invalid.
(b) The quest for knowledge.
(c) The passion for knowledge.
(d) Creating hypotheses.

9. What has a limited utility in comparing falsifiers?
(a) Sub-classes.
(b) Sub-tests.
(c) Sub-dimensions.
(d) Sub-justifications.

10. What does Popper feel about an axiom in relations of von Mises view of an axiom of randomness?
(a) It is a powerful construct.
(b) It is a weak construct.
(c) It is self-contradicting.
(d) Mathematical validity is high.

11. Why does Popper find Heisenberg's lack of logic and statistical testing disturbing?
(a) It lacks original thought.
(b) The theory is metaphysical without these factors.
(c) It lacks scientific validity.
(d) The theory is not logical without these factors.

12. What hypothetical estimate of frequency suggests equal distribution, normally based on considerations of symmetry?
(a) Extrapolation of statistical findings.
(b) Objective probability hypothesis.
(c) Equal choice hypothesis.
(d) Random events hypothesis.

13. What type of classes are singled out and can not be subject to the rigors of scientific empirical scrutiny?
(a) Unique classes.
(b) Unified classes.
(c) Sub-classes.
(d) Empty classes.

14. What type of content is considered valuable according to Popper?
(a) High empirical content.
(b) Low metaphysical content.
(c) Low empirical content.
(d) High metaphysical content.

15. In addition to theories not being falsifiable, what else does Popper say about theories?
(a) They are unique.
(b) They are not unique.
(c) They are not verifiable.
(d) They are subject to interpretation.