Since 15 percent of a university comprises Asian-American students, a sample for a study was chosen in such way that it, too, consisted of 15 percent Asian-Americans. This kind of sample would be an example of a__________
A) random sample
B) static sample
C) crowd sample
D) stratified sample
E) Select
D
You might also like to view...
Pregnant Patty's body is currently experiencing the event that triggers hormonal changes that will prevent further menstruation. This event is called a. implantation. b. conception
c. dilation. d. effacement.
According to Seligman, people who are optimistic tend to be healthier that those who are pessimistic
Indicate whether the statement is true or false.
Using designs with more than two levels of an independent variable allows researchers to:
a. compare more than two kinds of treatment in one study. b. compare two or more kinds of treatment with a control group. c. compare a placebo group to the control and experimental groups. d. accomplish all of the above.
The most common of the psychoactive substances, used by 90 percent of Americans, is
a. nicotine b. caffeine c. marijuana. d. opium.