If you created a stem-and-leaf display of the math SAT scores of all entering students in a large Midwestern state university, the leaves would most likely be

A professor knows that, if it is raining outside, the window of her office will be wet. She looks at her window and notices that it is wet. She therefore concludes that it must be raining outside. Which kind of reasoning is she using?

a. affirming the consequent b. affirming the antecedent c. denying the consequent d. denying the antecedent

When an experimenter's expectations about a behavior influence the results of his experiment, it is called a ______ .

A) self-fulfilling prophecy B) single-blind experiment C) double-blind experiment D) placebo effect