Individuals who are available and volunteer as subjects in a research study are used in the sampling method called:
A. convenience.
B. cluster.
C. random.
D. stratified.
Question 2
The sampling error is usually _____ with _____ samples and _____ as the sample _____.
A. smaller, larger, increases, decreases
B. larger, larger, decreases, increases
C. smaller, smaller, increases, decreases
D. larger, larger, decreases, decreases