Problem 2
Why is GPA a good example of the statistic mean? a. It is calculated by adding scores and dividing by the number of scores b. It is a good measure of how well a student is doing. c. It measures the spread, or variability, of a student's performance. d. We can plot it on a graph.
Problem 3
Ethical guidelines for research with nonhuman animals state that a. informed consent is always required. b. ethical and humane conditions must exist throughout the research process. c. computer modeling must always be tried before research with animals. d. deception can be used if fully justified.
Problem 3
Scientific theories are a. a set of related assumptions that guide and explain observations and allow testable predictions to be made. b. educated guesses. c. hunches. d. hypotheses.
Problem 3
Researchers have consistently found that married men live longer than single men. From this finding, we can conclude that a. if a man gets married, he adds years to his life. b. marriage causes men to live longer. c. being single causes men to die earlier. d. marriage correlates with longer life in men.
Problem 3
Scores that are widely spread apart have a a. high standard deviation. b. low standard deviation. c. high mean. d. low reliability.
Problem 3
A psychologist who is interested in how brain activity relates to behavior will most likely use which kind of measure? a. interview b. questionnaire c. behavioral d. physiological
Problem 4
What distinguishes science from pseudoscience? a. the use of statistics b. the content area studied c. open skepticism d. the search for truth
Problem 4
In research on whether sugar causes hyperactivity, researchers randomly assign children to receive no sugar. small amounts of sugar, or large amounts of sugar. They then observe and code activity levels. In this case, the sugar level is the a. outcome variable. b. dependent variable. c. independent variable. d. control condition.
Problem 5
In contrast to other kinds of research designs, a true experimental design must have two things: a. random assignment of participants to conditions and statistical analysis. b. random assignment of participants to conditions and manipulation of an independent variable. c. manipulation of an independent variable and a dependent variable. d. hypothesis testing and observation.
