Factorial designs allow researchers to use both random assignment and nonrandom assignment
in the same experiment. What term is used to describe this type of study?
A) bivariate assignment or groups B) mixed assignment or groups
C) factorial assignment or groups D) multiple assignment or groups
Question 2
For a 2 2 factorial design, which of the following sets of significant results are not possible?
A) one interaction only B) one main effect and one interaction
C) two main effects and two interactions D) two main effects and one interaction
Random X-chromosome inactivation in a calico cat.
Researchers have found that science instruction can be quite effective in grades 4 to 7.
Ascaris. (Sinclair Stammers/Science Photo Library/Photo Researchers, Inc.)
Researchers compared the ability to recognize various kinds of facial expressions across young adult
Discrete random variables- Probability Distribution Function
Discrete random variables- Probability Distribution Function