The effect of a two-stage sample design on tests of independence - ARCHIVED
Articles and reports: 12-001-X197800154830Description: When a two-stage sample is used to collect data, the correlations between the sampled units make the ?2 test of independence invalid. Use of the ordinary ?2 tables generally results in a test which is greater than the desired level of significance. The effect of the sample design comes from two main areas: the sample size within PSU’s and the degree to which the characteristics are independent within each PSU. The effect of the sample size within PSU’s is greatest when there is no independence within each PSU, and diminishes as the degree of independence increases. Issue Number: 1978001Author(s): Cowan, J.; Binder, D.A.Main Product:Survey Methodology
