Clever devices--the stereoscope, a virtual reality headset, the 3D glasses used to view the film "Coraline"--create the illusion of three-dimensions by taking advantage of the fact that the left eye and the right eye see objects from slightly different locations. This binocular depth cue is:

Jane wants to better understand why her friend Margaret chooses the boyfriends she does. One way for Jane to gain insight into Margaret's thoughts, feelings, and behaviors is through the study of:

a. biology. b. psychology. c. ethics. d. economics.

Which of the following statements is correct?

a. The smaller the sample, the smaller the sampling error. b. The smaller the sample, the more consistent the sampling error. c. The larger the sampling error, the more consistent the estimate. d. The larger the sample, the smaller the sampling error.