Multiple Questions Answers

1. A research methods student conducts a study on the relationship between people’s level of extroversion and the number of close friends they have. She computes Pearson’s r, which comes out to be – 1.70. Which of the following is most clearly true?

a. The relationship between the two variables is weak.

b. More extroverted people have fewer friends.

c. She ought to use a bar graph to display her results.

d. She made an error in computing Pearson’s r.

2. When you want to show that Variable X has a direct effect on Variable Y, what is the best kind of study to conduct?

a. a nonexperimental study

b. an experiment

c. an observational study

d. a survey

3. The relationship between people’s heights and weights is positive.

a. True

b. False

4. In a negative relationship, higher scores on one variable are associated with lower scores on another variable.

a. True

b. False