Go to the Web site for the GSS, www.norc.org/GSS+Website/, click on Documentation, and then click on Sampling

Question:

Go to the Web site for the GSS, www.norc.org/GSS+Website/, click on Documentation, and then click on Sampling Design and Weighting. There you will see described the complex multistage design of the GSS. Explain how the GSS uses
(a) Clustering.
(b) Stratification.
(c) Simple random sampling.