Question 1: Among the disadvantages of the case study method is:

a. the problem of replicating a treatment.
b. the difficulty with determining relationships among variables.
c. the difficulty of examining certain concepts experimentally.
d. the possibility of subjective judgments.

Question 2: Which of the following describes the relationship between your credit card balance each month and the amount of interest you are paying (not interest rate)?

a. A perfect negative correlation
b. A weak negative correlation
c. No correlation
d. A strong positive correlation

Question 3: Which of the following does a correlation coefficient not tell us?

a. If the difference between two means reflects a real difference or can be attributed to chance fluctuation.
b. The strength of a relationship between two measures.
c. The direction of a relationship between two measures.
d. How well a score on one measure can be predicted by a score on another?
Question 4: What is made difficult by the “file drawer” problem?
a. Determining if the prediction was made before or after seeing the results
b. Determining if the appropriate statistical tests were used
c. Determining the strength of an effect by how often it is replicated
d. Determining how valid the measures were

Question 4: A reliable test:

a. measures what it was designed to measure.
b. measures what it measures consistently.
c. has good validity.
d. measures many different concepts at once.

Question 5: A test is said to have good validity if there is good evidence that:

a. all the test items are measuring the same thing.
b. it has been used previously by many different researchers.
c. test scores are relatively stable over time.
d. the test measures what it was designed to measure.