Research suggests that behavioral therapy is of less help to people who suffer which kind of depression?

The population variance is

a. an estimate of the sample variance. b. usually an unknown that we try to estimate. c. calculated exactly like the sample variance. d. a biased estimate.

Selena, a research scientist, is developing a study of prejudice. Which of the following would be most useful as an implicit measure of prejudice?

a. ?association of positive terms with White faces and negative terms with Black faces b. ?association of geographic locations with demographic groups c. ?patterns of higher education for Whites versus Blacks by age group d. ?patterns of hiring for White job candidates versus Black job candidates