A probability sampling technique in which a researcher begins by identifying subgroups and then randomly samples from each groups is called probability sampling.
a. stratified
b. cluster
c. simple
d. systematic
You have been discussing a research project with your friend Tony. Tony has told you that his hypothesis states, the mean of population 1 is equal to the mean of population 2 . How would you write this research hypothesis in symbols?
a. H1 1 = 2
b. H0 1 < 2
c. H1 1 2
d. H0 1 = 2
When conducting research, it is important to properly define how a concept or idea will be measured. This is known as a(n) .
a. ceiling effect.
b. operational definition.
c. degree of response.
d. floor effect.
Psychological studies involve the use of many variables. Which of the following variables could bias research findings?
a. independent
b. extraneous
c. nuisance
d. both B and C
Linda is conducting a survey to evaluate the eating habits of customers at fast food restaurants. She knows that people eat at the restaurant for breakfast, lunch, and dinner.
Therefore, she plans to randomly sample participants from each of these groups. This process is known as probability sampling.
a. simple
b. stratified
c. systematic
d. quota
Quick Reply
