Question: : Explain why random samples are preferred.

Describe the advantages and limitations of commonly used sampling techniques.

Task:

Write a brief essay ( suggested length of 2 pages ) in which you:

A. Explain why random samples are preferred to nonrandom samples.

B. Describe the advantages and limitations of the following commonly used sampling techniques:

i. Simple random sampling

ii. Stratified sampling

iii. Cluster sampling

iv. Multi-stage sampling