A random sample means that
a. each person in the population has an equal chance of being included in the study
b. people are assigned to conditions by random chance
c. participants have responded to an advertisement or request for participation
d. the sample is not representative
Question 2
In the last 20 years, social psychologists have improved the representativeness of their research samples in which of the following ways?
a. by including many more members of ethnic minority groups in their samples
b. by decreasing their reliance on older adults as research participants
c. by improving the gender balance of their samples
d. all of the above
Random X-chromosome inactivation in a calico cat.
A small sample of the great diversity of seed sizes and shapes.
World Population Growth, 1750-2150
Population Pyramids
Sample prescriptions of antibiotics for dental infections.
Sample Inclusion for Various s